given title:

OBO Relations Ontology

given comment: The OBO Relations Ontology (RO) is a collection of OWL relations (ObjectProperties) intended for use across a wide variety of biological ontologies.

Ontology URI First Discovery Discovery Source Databus Artifact Accessability?
http://purl.obolibrary.org/obo/ro.owl 2021-03-04 22:08:57 SPOs Link