Dataset

PMD-X Cross Dataspace Demo

This dataset demonstrates how material information from two independent industrial dataspaces — **Catena-X** and **Manufacturing-X** — can be jointly represented and queried as a unified **[PMDCo](https://github.com/materialdigital/core-ontology)** knowledge graph. ## Scenario The object of interest is a **tension pulley assembly** composed of two parts from different manufacturers and dataspaces. **Part 1 — Pulley Wheel (Catena-X)** Material: PA 66 GF 30 — see [cross-project-use-case](https://dataportal.material-digital.de/dataset/cross-project-use-case) **Part 2 — Tensioner Bracket (Manufacturing-X)** Material: Steel AISI 304 — see [steel-inspection-document-mapro](https://dataportal.material-digital.de/dataset/steel-inspection-document-mapro) The [assembly graph](https://dataportal.material-digital.de/dataset/source record/resource/source record/download/tension_pully.ttl) represents the tension pulley using PMDCo and BFO part-whole relations. Component IRIs link into the material graphs from both source datasets. All three graphs are loaded into this dataset's [Fuseki triplestore](https://dataportal.material-digital.de/dataset/source record/fuseki/$/sparql), enabling joint SPARQL queries that traverse from the physical object through its parts into material properties originating from two separate dataspaces. An [example SPARQL query](https://dataportal.material-digital.de/dataset/source record/resource/source record/download/cross_dataspace_query.sparql) demonstrates this joint querying capability. Or a simple on directly here [Query](https://dataportal.material-digital.de/sparklis/?title=pmd-x-cross-dataspace-demo&endpoint=https%3A%2F%2Fdataportal.material-digital.de%2Fdataset%2F203bde74-4e5f-4a74-a1d8-261e0f8ca84a%2Ffuseki%2F%24%2Fsparql&sparklis-query=%5BVId%5DReturn%28Det%28An%28161%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FBFO_0000051%22%2CFwd%2CNOr%28Det%28Term%28URI%28%22https%3A%2F%2Fcatena-x.net%2Fedc%2Fassets%2Furn%3Auuid%3A3f5a8c2d-1234-4b6e-9abc-def012345678%22%29%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FBFO_0000051%22%2CFwd%2CDet%28An%28169%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FRO_0000086%22%2CFwd%2CDet%28An%28205%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FIAO_0000417%22%2CFwd%2CDet%28An%28241%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FOBI_0001938%22%2CFwd%2CDet%28An%28277%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28And%28Rel%28%22https%3A%2F%2Fqudt.org%2Fschema%2Fqudt%2FnumericValue%22%2CFwd%2CDet%28An%28314%2CModif%28Select%2CUnordered%29%2CThing%29%2CNone%29%29%2CRel%28%22https%3A%2F%2Fqudt.org%2Fschema%2Fqudt%2Funit%22%2CFwd%2CDet%28An%28313%2CModif%28Select%2CUnordered%29%2CThing%29%2CNone%29%29%29%29%29%29%29%29%29%29%29%29%29%29%29%29%29%2CDet%28Term%28URI%28%22https%3A%2F%2Fmfg-x.2024.2de%2Fdsp%2Fassets%2Fcomponent-87654321%22%29%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FRO_0000086%22%2CFwd%2CDet%28An%28322%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FOBI_0001938%22%2CFwd%2CDet%28An%28358%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28And%28Rel%28%22https%3A%2F%2Fw3id.org%2Fpmd%2Fco%2FPMD_0000006%22%2CFwd%2CDet%28An%28395%2CModif%28Select%2CUnordered%29%2CThing%29%2CNone%29%29%2CRel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FIAO_0000039%22%2CFwd%2CDet%28An%28394%2CModif%28Select%2CUnordered%29%2CThing%29%2CNone%29%29%29%29%29%29%29%29%29%29%29%29%29%29%29%29&sparklis-path=D&entity_lexicon_select=http%3A%2F%2Fwww.w3.org%2F2000%2F01%2Frdf-schema%23label&concept_lexicons_select=http%3A%2F%2Fwww.w3.org%2F2000%2F01%2Frdf-schema%23label%29 ## Full Pipeline ![Cross-Dataspace Pipeline Diagram](https://dataportal.material-digital.de/dataset/source record/resource/source record/download/pipeline-diagram.svg) ## Part of Cross-Dataspace Demonstration This dataset is part of a three-dataset series: - [cross-project-use-case](https://dataportal.material-digital.de/dataset/cross-project-use-case) — Catena-X SAMM → PMDCo conversion - [steel-inspection-document-mapro](https://dataportal.material-digital.de/dataset/steel-inspection-document-mapro) — Manufacturing-X AAS → PMDCo conversion - **This dataset** — joint assembly graph and cross-dataspace SPARQL queries

Dataset identity

Stable URI
https://datagraph.dev.matportal.org/id/dataset/pmd-x-cross-dataspace-demo Open
Portal page
/datasets/pmd-x-cross-dataspace-demo Open
RDF Turtle
https://datagraph.dev.matportal.org/data/dataset/pmd-x-cross-dataspace-demo.ttl Open
License
Reuse license not specified
Publisher
PMD
Published by
admin
Project
PMD
Version
Not specified
Identifier
203bde74-4e5f-4a74-a1d8-261e0f8ca84a

Use this dataset

To work with this dataset in scripts or Jupyter notebooks, copy the public RDF Turtle URL or use the SPARQL query template below.

RDF URL
https://datagraph.dev.matportal.org/data/dataset/pmd-x-cross-dataspace-demo.ttl
Named Graph
https://datagraph.dev.matportal.org/id/graph/pmd-x-cross-dataspace-demo/inspectiondocument-316-4401-alloy-pmdco-00262ad0

SPARQL query template

SELECT ?s ?p ?o WHERE {
  VALUES ?g { <https://datagraph.dev.matportal.org/id/graph/pmd-x-cross-dataspace-demo/inspectiondocument-316-4401-alloy-pmdco-00262ad0> <https://datagraph.dev.matportal.org/id/graph/pmd-x-cross-dataspace-demo/material-data-pa6gf30-pmdco-00367f16> <https://datagraph.dev.matportal.org/id/graph/pmd-x-cross-dataspace-demo/tension-pully-76296e9a> }
  GRAPH ?g { ?s ?p ?o }
}
LIMIT 100

Related ontologies and catalogue context

Files & access

9 file/access items

tension_pully.ttl

PMDCo/BFO-conformant RDF graph describing a tension pulley assembly (`ex:TensionPulley_001`) composed of two parts from different dataspaces. **Part 1 — Pulley Wheel (Catena-X)** Material: PA6GF30 — see [cross-project-use-case](https://dataportal.material-digital.de/dataset/cross-project-use-case) **Part 2 — Tensioner Bracket (Manufacturing-X)** Material: Steel 316/4401 — see [steel-inspection-document-mapro](https://dataportal.material-digital.de/dataset/steel-inspection-document-mapro) Each component links to its material entity via `obo:BFO_0000051` (has part), pointing directly into the PMDCo material graphs loaded in this dataset's [Fuseki triplestore](https://dataportal.material-digital.de/dataset/203bde74-4e5f-4a74-a1d8-261e0f8ca84a/fuseki/$/sparql). This enables joint SPARQL queries that traverse from the assembly through its parts into material properties originating from two separate dataspaces.

Open file/access URL

material_data_pa6gf30_pmdco.ttl

PMDCo-conformant RDF knowledge graph for PA6GF30, produced by applying [pmdco-mapping-insert.sparql](https://dataportal.material-digital.de/dataset/f2bca6a2-04df-47cb-9439-589e46ba60e2/resource/30780c7d-e08b-4607-b83a-c2dd20e44e89/download/pmdco-mapping-insert.sparql) to the Fuseki triplestore loaded with [material_data_test_pa6gf30.json](https://dataportal.material-digital.de/dataset/f2bca6a2-04df-47cb-9439-589e46ba60e2/resource/5f7d5a69-f8f5-49d1-9780-c3ecdc0e11ec/download/material_data_test_pa6gf30.json). Material properties are represented as PMDCo quality entities linked to QUDT-typed measurement datums. This is the output of the Catena-X → PMDCo conversion pipeline.

Open file/access URL

InspectionDocument_316_4401_alloy_PMDCore.ttl

PMDCo material graph for stainless steel 316/4401 (Manufacturing-X dataspace component). Loaded into this dataset's Fuseki triplestore to enable joint querying with the Catena-X material data. Source: dataset [steel-inspection-document-mapro](https://dataportal.material-digital.de/dataset/steel-inspection-document-mapro).

Open file/access URL

cross_dataspace_query.sparql

Example SPARQL SELECT query demonstrating joint querying over the tension pulley assembly. Given `ex:TensionPulley_001`, retrieves both components and their material properties from the merged Catena-X and Manufacturing-X PMDCo graphs. Run against this dataset's [Fuseki endpoint](https://dataportal.material-digital.de/dataset/203bde74-4e5f-4a74-a1d8-261e0f8ca84a/fuseki/$/sparql).

Open file/access URL

SPARQL

Public file, distribution, or access URL

Open file/access URL

pipeline-diagram.svg

Overview of the 2 pipelines

Open file/access URL

tension_pully.ttl

Public file, distribution, or access URL

Open file/access URL

material_data_pa6gf30_pmdco.ttl

Public file, distribution, or access URL

Open file/access URL

InspectionDocument_316_4401_alloy_PMDCore.ttl

Public file, distribution, or access URL

Open file/access URL

File preview

Preview metadata is available, but no preview rows were returned.

Named graphs

Query this data
Graph URI Status Triples RDF resources
https://datagraph.dev.matportal.org/id/graph/pmd-x-cross-dataspace-demo/inspectiondocument-316-4401-alloy-pmdco-00262ad0 published 23 16
https://datagraph.dev.matportal.org/id/graph/pmd-x-cross-dataspace-demo/material-data-pa6gf30-pmdco-00367f16 published 13,798 1,982
https://datagraph.dev.matportal.org/id/graph/pmd-x-cross-dataspace-demo/tension-pully-76296e9a published 13 6

RDF resources

MaterialData_Z1234-material

RDF resource

Open resource

Tension Pulley Assembly

RDF resource

Open resource

316-4401_material

RDF resource

Open resource

Pulley Wheel

RDF resource

Open resource

Tensioner Bracket

RDF resource

Open resource

Object

RDF resource

Open resource

LinearThermalExpansionCoefficient_0.0025

RDF resource

Open resource

MaterialData_Z1234

RDF resource

Open resource

PA6GF30 (Z1234)

RDF resource

Open resource

MaterialInformation_Z1234

RDF resource

Open resource

MechanicalProperty_210_9800

RDF resource

Open resource

MechanicalProperty_210_9800-datum-flexuralStrength

RDF resource

Open resource

Ask this dataset with GraphRAG

GraphRAG searches MatPortal's public dataset metadata, named graph metadata, indexed RDF resources, and facts. It does not copy or vectorize every external file or raw distribution.

Ask a question above to get a graph-aware answer and a safe SPARQL starting point.

Indexed sources

  • Dataset Metadata
  • Distribution
  • Distribution
  • Distribution
  • Distribution
  • Distribution
  • Distribution
  • Distribution
  • Distribution
  • Distribution

Query this dataset

Use the guarded public SPARQL workbench with a dataset graph template. Only read-only SELECT queries with limits are accepted.

SELECT ?s ?p ?o WHERE {
  VALUES ?g { <https://datagraph.dev.matportal.org/id/graph/pmd-x-cross-dataspace-demo/inspectiondocument-316-4401-alloy-pmdco-00262ad0> <https://datagraph.dev.matportal.org/id/graph/pmd-x-cross-dataspace-demo/material-data-pa6gf30-pmdco-00367f16> <https://datagraph.dev.matportal.org/id/graph/pmd-x-cross-dataspace-demo/tension-pully-76296e9a> }
  GRAPH ?g { ?s ?p ?o }
}
LIMIT 100
Open in SPARQL workbench

Graph-aware Q&A readiness

  • Dataset Metadata
  • Distribution
  • Distribution
  • Distribution
  • Distribution
  • Distribution
  • Distribution
  • Distribution

Dataset quality and readiness

Score
83%
Maturity
review_ready
Publication boundary
Public output is derived from reviewed public dataset/resource/graph metadata only.

Checks and recommendations

  • Core metadata completeness
  • Persistent identifier and citation readiness
  • License availability
  • File, service, or access-resource links
  • Ontology and linked-data context
  • Unit and quantity-kind validation
  • Governance and review state

Dataset FAIR assessment

FAIR assessment is not available yet.

Unit profile

{
  "valid": true,
  "score": 1.0,
  "checked_fields": [],
  "issues": [],
  "profile": "matportal-materials-qudt-lite-v1"
}

Semantic dataset passport

Passport ID
pmd-x-cross-dataspace-demo
DCAT
https://datagraph.dev.matportal.org/id/dataset/pmd-x-cross-dataspace-demo
Review status
published

Semantic mirror manifest

{
  "@context": {
    "dcterms": "http://purl.org/dc/terms/",
    "dcat": "http://www.w3.org/ns/dcat#",
    "prov": "http://www.w3.org/ns/prov#",
    "matportal": "https://w3id.org/matportal/schema#"
  },
  "id": "https://datagraph.dev.matportal.org/api/v1/datasets/pmd-x-cross-dataspace-demo/mirror-package",
  "type": "matportal:SemanticMirrorPackage",
  "dataset": "https://datagraph.dev.matportal.org/datasets/pmd-x-cross-dataspace-demo",
  "dataset_slug": "pmd-x-cross-dataspace-demo",
  "generated_at": "2026-07-16T23:15:18.366107+00:00",
  "raw_data_policy": "linked-only; no raw data copied by this package",
  "publication_boundary": "review artefact; downstream data-space publication remains governed",
  "contains": [
    "dcat-jsonld",
    "datacite-style-metadata",
    "ro-crate-metadata",
    "ckan-package-json",
    "edc-asset-json",
    "aas-submodel-semantic-ids",
    "sssom-mapping-snapshot",
    "shacl-shape-scaffold",
    "review-record"
  ],
  "counts": {
    "resources": 9,
    "graphs": 3,
    "indexed_entities": 2004,
    "mappings": 0,
    "unit_fields_checked": 0
  },
  "source_authority": "MatPortal dataset metadata and linked external providers remain authoritative; connector cards preserve source links."
}

Material identity crosswalk

No public material identity crosswalk entries are linked to this dataset yet.

Raw public metadata

{
  "id": "dataset_d902d041467ec63e",
  "slug": "pmd-x-cross-dataspace-demo",
  "title": "PMD-X Cross Dataspace Demo",
  "description": "This dataset demonstrates how material information from two independent industrial dataspaces — **Catena-X** and **Manufacturing-X** — can be jointly represented and queried as a unified **[PMDCo](https://github.com/materialdigital/core-ontology)** knowledge graph. ## Scenario The object of interest is a **tension pulley assembly** composed of two parts from different manufacturers and dataspaces. **Part 1 — Pulley Wheel (Catena-X)** Material: PA 66 GF 30 — see [cross-project-use-case](https://dataportal.material-digital.de/dataset/cross-project-use-case) **Part 2 — Tensioner Bracket (Manufacturing-X)** Material: Steel AISI 304 — see [steel-inspection-document-mapro](https://dataportal.material-digital.de/dataset/steel-inspection-document-mapro) The [assembly graph](https://dataportal.material-digital.de/dataset/source record/resource/source record/download/tension_pully.ttl) represents the tension pulley using PMDCo and BFO part-whole relations. Component IRIs link into the material graphs from both source datasets. All three graphs are loaded into this dataset's [Fuseki triplestore](https://dataportal.material-digital.de/dataset/source record/fuseki/$/sparql), enabling joint SPARQL queries that traverse from the physical object through its parts into material properties originating from two separate dataspaces. An [example SPARQL query](https://dataportal.material-digital.de/dataset/source record/resource/source record/download/cross_dataspace_query.sparql) demonstrates this joint querying capability. Or a simple on directly here [Query](https://dataportal.material-digital.de/sparklis/?title=pmd-x-cross-dataspace-demo&endpoint=https%3A%2F%2Fdataportal.material-digital.de%2Fdataset%2F203bde74-4e5f-4a74-a1d8-261e0f8ca84a%2Ffuseki%2F%24%2Fsparql&sparklis-query=%5BVId%5DReturn%28Det%28An%28161%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FBFO_0000051%22%2CFwd%2CNOr%28Det%28Term%28URI%28%22https%3A%2F%2Fcatena-x.net%2Fedc%2Fassets%2Furn%3Auuid%3A3f5a8c2d-1234-4b6e-9abc-def012345678%22%29%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FBFO_0000051%22%2CFwd%2CDet%28An%28169%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FRO_0000086%22%2CFwd%2CDet%28An%28205%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FIAO_0000417%22%2CFwd%2CDet%28An%28241%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FOBI_0001938%22%2CFwd%2CDet%28An%28277%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28And%28Rel%28%22https%3A%2F%2Fqudt.org%2Fschema%2Fqudt%2FnumericValue%22%2CFwd%2CDet%28An%28314%2CModif%28Select%2CUnordered%29%2CThing%29%2CNone%29%29%2CRel%28%22https%3A%2F%2Fqudt.org%2Fschema%2Fqudt%2Funit%22%2CFwd%2CDet%28An%28313%2CModif%28Select%2CUnordered%29%2CThing%29%2CNone%29%29%29%29%29%29%29%29%29%29%29%29%29%29%29%29%29%2CDet%28Term%28URI%28%22https%3A%2F%2Fmfg-x.2024.2de%2Fdsp%2Fassets%2Fcomponent-87654321%22%29%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FRO_0000086%22%2CFwd%2CDet%28An%28322%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28Rel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FOBI_0001938%22%2CFwd%2CDet%28An%28358%2CModif%28Select%2CUnordered%29%2CThing%29%2CSome%28And%28Rel%28%22https%3A%2F%2Fw3id.org%2Fpmd%2Fco%2FPMD_0000006%22%2CFwd%2CDet%28An%28395%2CModif%28Select%2CUnordered%29%2CThing%29%2CNone%29%29%2CRel%28%22http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FIAO_0000039%22%2CFwd%2CDet%28An%28394%2CModif%28Select%2CUnordered%29%2CThing%29%2CNone%29%29%29%29%29%29%29%29%29%29%29%29%29%29%29%29&sparklis-path=D&entity_lexicon_select=http%3A%2F%2Fwww.w3.org%2F2000%2F01%2Frdf-schema%23label&concept_lexicons_select=http%3A%2F%2Fwww.w3.org%2F2000%2F01%2Frdf-schema%23label%29 ## Full Pipeline ![Cross-Dataspace Pipeline Diagram](https://dataportal.material-digital.de/dataset/source record/resource/source record/download/pipeline-diagram.svg) ## Part of Cross-Dataspace Demonstration This dataset is part of a three-dataset series: - [cross-project-use-case](https://dataportal.material-digital.de/dataset/cross-project-use-case) — Catena-X SAMM → PMDCo conversion - [steel-inspection-document-mapro](https://dataportal.material-digital.de/dataset/steel-inspection-document-mapro) — Manufacturing-X AAS → PMDCo conversion - **This dataset** — joint assembly graph and cross-dataspace SPARQL queries",
  "license": "License not specified",
  "creators": [],
  "organization": "PMD",
  "project": "PMD",
  "published_by": "admin",
  "groups": [],
  "keywords": [
    "catena-x",
    "manufacturing-x",
    "pmdco"
  ],
  "tags": [
    "catena-x",
    "manufacturing-x",
    "pmdco"
  ],
  "visibility": "public",
  "status": "published",
  "ontology_annotations": [
    "pmdco"
  ],
  "distributions": [
    {
      "title": "tension_pully.ttl",
      "filename": "tension_pully.ttl",
      "description": "PMDCo/BFO-conformant RDF graph describing a tension pulley assembly (`ex:TensionPulley_001`)\r\ncomposed of two parts from different dataspaces.\r\n\r\n**Part 1 — Pulley Wheel (Catena-X)**\r\nMaterial: PA6GF30 — see [cross-project-use-case](https://dataportal.material-digital.de/dataset/cross-project-use-case)\r\n\r\n**Part 2 — Tensioner Bracket (Manufacturing-X)**\r\nMaterial: Steel 316/4401 — see [steel-inspection-document-mapro](https://dataportal.material-digital.de/dataset/steel-inspection-document-mapro)\r\n\r\nEach component links to its material entity via `obo:BFO_0000051` (has part), pointing directly\r\ninto the PMDCo material graphs loaded in this dataset's\r\n[Fuseki triplestore](https://dataportal.material-digital.de/dataset/203bde74-4e5f-4a74-a1d8-261e0f8ca84a/fuseki/$/sparql).\r\nThis enables joint SPARQL queries that traverse from the assembly through its parts into\r\nmaterial properties originating from two separate dataspaces.",
      "visibility": "public",
      "status": "published",
      "media_type": "text/turtle",
      "format": "text/turtle",
      "checksum_sha256": "",
      "size_bytes": 1582,
      "source_uri": "https://dataportal.material-digital.de/dataset/203bde74-4e5f-4a74-a1d8-261e0f8ca84a/resource/76296e9a-a97d-42e7-91cd-657bfc70c12d/download/tension_pully.ttl",
      "download_url": "https://dataportal.material-digital.de/dataset/203bde74-4e5f-4a74-a1d8-261e0f8ca84a/resource/76296e9a-a97d-42e7-91cd-657bfc70c12d/download/tension_pully.ttl",
      "access_url": "https://dataportal.material-digital.de/dataset/203bde74-4e5f-4a74-a1d8-261e0f8ca84a/resource/76296e9a-a97d-42e7-91cd-657bfc70c12d/download/tension_pully.ttl",
      "uri": "https://datagraph.dev.matportal.org/id/distribution/pmd-x-cross-dataspace-demo/resource_2c444ab3f2e5610d",
      "url_type": "upload",
      "rdf_format": null,
      "ontology_annotations": [],
      "data_dictionary": [],
      "views": [
        {
          "id": "",
          "title": "RDF preview",
          "view_type": "rdf",
          "url": "",
          "embed_url": "",
          "embeddable": false,
          "description": "",
          "default": true,
          "config": {
            "mode": "rdf-preview"
          }
        },
        {
          "id": "",
          "title": "Download",
          "view_type": "download",
          "url": "",
          "embed_url": "",
          "embeddable": false,
          "description": "",
          "default": true,
          "config": {}
        },
        {
          "id": "",
          "title": "Create Mapping",
          "view_type": "mapping",
          "url": "",
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