Global Code Book Ontology	Drug Target Ontology	Source
http://purl.obolibrary.org/obo/BTO_0001409	http://purl.obolibrary.org/obo/UBERON_0000056	LOOM
http://purl.obolibrary.org/obo/BTO_0001307	http://purl.obolibrary.org/obo/UBERON_0000945	LOOM
http://purl.obolibrary.org/obo/BTO_0001418	http://purl.obolibrary.org/obo/UBERON_0001255	LOOM