Vertebrate Taxonomy Ontology	Ontology for Representing CDM Semantics	Source
http://purl.obolibrary.org/obo/PCO_0000020	http://purl.obolibrary.org/obo/TAXRANK_0000004	LOOM
http://purl.obolibrary.org/obo/NCBITaxon_9606	http://purl.obolibrary.org/obo/VTO_0011993	LOOM