Regulation of Gene Expression Ontolology	Plant Diversity Ontology	Source
http://semanticscience.org/resource/SIO_000004	http://purl.obolibrary.org/obo/bfo#MaterialEntity	LOOM
http://semanticscience.org/resource/SIO_000006	http://purl.obolibrary.org/obo/bfo#Process	LOOM