Population and Community Ontology	Breast Cancer Grading Ontology	Source
http://purl.obolibrary.org/obo/BFO_0000001	http://swrl.stanford.edu/ontologies/3.3/swrla.owl#Entity	LOOM
http://purl.obolibrary.org/obo/BFO_0000001	http://swrl.stanford.edu/ontologies/built-ins/3.3/temporal.owl#Entity	LOOM