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# Relationship types
The following table lists all the possible relation semantics found in the graph dump.
Note: the labels used to specify the semantic of the relationships are (for the large) inherited from the [DataCite metadata kernel ](https://schema.datacite.org/meta/kernel-4.4/doc/DataCite-MetadataKernel_v4.4.pdf ), which provides a description for them.
| # | Source entity type | Target entity type | Relation name / inverse | Provenance |
|:--:|:--------------------------------------:|:--------------------------------------:|:----------------------------------------------------------:|:-----------------------------------------------:|
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| 1 | [Project ](../../data-model/entities/project ) | [Result ](../../data-model/entities/result ) | produces / isProducedBy | Harvested, Inferred by OpenAIRE, Linked by user |
| 2 | [Project ](../../data-model/entities/project ) | [Organization ](../../data-model/entities/organization ) | hasParticipant / isParticipant | Harvested |
| 3 | [Project ](../../data-model/entities/project ) | [Community ](../../data-model/entities/community ) | IsRelatedTo / IsRelatedTo | Linked by user |
| 4 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsAmongTopNSimilarDocuments / HasAmongTopNSimilarDocuments | Inferred by OpenAIRE |
| 5 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsSupplementTo / IsSupplementedBy | Harvested |
| 6 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsRelatedTo / IsRelatedTo | Harvested, Inferred by OpenAIRE, Linked by user |
| 7 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsPartOf / HasPart | Harvested |
| 8 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsDocumentedBy / Documents | Harvested |
| 9 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsObsoletedBy / Obsoletes | Harvested |
| 10 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsSourceOf / IsDerivedFrom | Harvested |
| 11 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsCompiledBy / Compiles | Harvested |
| 12 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsRequiredBy / Requires | Harvested |
| 13 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsCitedBy / Cites | Harvested, Inferred by OpenAIRE |
| 14 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsReferencedBy / References | Harvested |
| 15 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsReviewedBy / Reviews | Harvested |
| 16 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsOriginalFormOf / IsVariantFormOf | Harvested |
| 17 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsVersionOf / HasVersion | Harvested |
| 18 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsIdenticalTo / IsIdenticalTo | Harvested |
| 19 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsPreviousVersionOf / IsNewVersionOf | Harvested |
| 20 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsContinuedBy / Continues | Harvested |
| 21 | [Result ](../../data-model/entities/result ) | [Result ](../../data-model/entities/result ) | IsDescribedBy / Describes | Harvested |
| 22 | [Result ](../../data-model/entities/result ) | [Organization ](../../data-model/entities/organization ) | hasAuthorInstitution / isAuthorInstitutionOf | Harvested, Inferred by OpenAIRE |
| 23 | [Result ](../../data-model/entities/result ) | [Data source ](../../data-model/entities/data-source ) | isHostedBy / hosts | Harvested, Inferred by OpenAIRE |
| 24 | [Result ](../../data-model/entities/result ) | [Data source ](../../data-model/entities/data-source ) | isProvidedBy / provides | Harvested |
| 25 | [Result ](../../data-model/entities/result ) | [Community ](../../data-model/entities/community ) | IsRelatedTo / IsRelatedTo | Harvested, Inferred by OpenAIRE, Linked by user |
| 26 | [Organization ](../../data-model/entities/organization ) | [Community ](../../data-model/entities/community ) | IsRelatedTo / IsRelatedTo | Linked by user |
| 27 | [Organization ](../../data-model/entities/organization ) | [Organization ](../../data-model/entities/organization ) | IsChildOf / IsParentOf | Linked by user |
| 28 | [Data source ](../../data-model/entities/data-source ) | [Community ](../../data-model/entities/community ) | IsRelatedTo / IsRelatedTo | Linked by user |
| 29 | [Data source ](../../data-model/entities/data-source ) | [Organization ](../../data-model/entities/organization ) | isProvidedBy / provides | Harvested |