Orthology Ontology	Drosophila Gross Anatomy Ontology	Source
http://purl.obolibrary.org/obo/FBbt_00000001	http://purl.org/net/orth#Organism	LOOM
http://purl.obolibrary.org/obo/FBbt_00000001	http://purl.obolibrary.org/obo/NCIT_C14250	LOOM