Systems Biology Ontology	Plant Breeding Ontology	Source
http://biomodels.net/SBO/SBO_0000243	http://purl.obolibrary.org/obo/PBO_0000023	LOOM
http://biomodels.net/SBO/SBO_0000358	http://purl.obolibrary.org/obo/PBO_0000056	LOOM