LinkML Common Metadata Elements and Terms	Cell Cycle Ontology	Source
http://purl.obolibrary.org/obo/SIO_000003	https://w3id.org/linkml-common/PhysicalEntity	LOOM
http://purl.obolibrary.org/obo/SIO_000000	https://w3id.org/linkml-common/Entity	LOOM