# Slot: left_side _The first ontology is arbitrarily designated the left side_ URI: [xodiff:left_side](https://w3id.org/oak/cross-ontology-diff/left_side) ## Inheritance * [side](side.md) * **left_side** ## Mixin Usage | mixed into | description | range | domain | | --- | --- | --- | --- | | [left_subject_id](left_subject_id.md) | The subject (child) of the source/left edge | EntityReference | | | [left_object_id](left_object_id.md) | The object (parent) of the source/left edge | EntityReference | | | [left_predicate_id](left_predicate_id.md) | The predicate (relation) of the source/left edge | EntityReference | | | [left_subject_label](left_subject_label.md) | The name of the subject (child) of the source/left edge | Label | | | [left_object_label](left_object_label.md) | The name of the object (parent) of the source/left edge | Label | | | [left_predicate_label](left_predicate_label.md) | The name of the predicate of the source/left edge | Label | | | [left_subject_is_functional](left_subject_is_functional.md) | True if a subject mapping is present, and maps uniquely within the same ontol... | None | | | [left_object_is_functional](left_object_is_functional.md) | True if an object mapping is present, and maps uniquely within the same ontol... | None | | ## Properties * Range: [String](String.md) * Mixin: True ## Identifier and Mapping Information ### Schema Source * from schema: https://w3id.org/oak/cross-ontology-diff ## LinkML Source
```yaml name: left_side description: The first ontology is arbitrarily designated the left side from_schema: https://w3id.org/oak/cross-ontology-diff rank: 1000 is_a: side mixin: true alias: left_side range: string ```