Schema.org core and all extension vocabularies	Drug Target Ontology	Source
http://schema.org/Bone	http://purl.obolibrary.org/obo/BTO_0000140	LOOM
http://schema.org/Joint	http://purl.obolibrary.org/obo/BTO_0001686	LOOM
http://schema.org/Nerve	http://purl.obolibrary.org/obo/BTO_0000925	LOOM
http://schema.org/Vein	http://purl.obolibrary.org/obo/BTO_0000234	LOOM
http://schema.org/Muscle	http://purl.obolibrary.org/obo/BTO_0000887	LOOM
http://schema.org/Artery	http://purl.obolibrary.org/obo/BTO_0000573	LOOM
http://schema.org/Role	http://purl.obolibrary.org/obo/BFO_0000023	LOOM