METPO	BioPAX Ontology of Biological Pathways	Source
http://purl.obolibrary.org/obo/SO_0000704	http://www.biopax.org/release/biopax-level3.owl#Gene	LOOM
http://purl.obolibrary.org/obo/BFO_0000001	http://www.biopax.org/release/biopax-level3.owl#Entity	LOOM
http://purl.obolibrary.org/obo/PR_000000001	http://www.biopax.org/release/biopax-level3.owl#Protein	LOOM
http://purl.obolibrary.org/obo/GO_0006810	http://www.biopax.org/release/biopax-level3.owl#Transport	LOOM
http://purl.obolibrary.org/obo/CHEBI_36080	http://www.biopax.org/release/biopax-level3.owl#Protein	LOOM