Environmental conditions, treatments and exposures ontology	Metadata Authority Description Schema in RDF	Source
http://www.loc.gov/mads/rdf/v1#Variant	http://purl.obolibrary.org/obo/PATO_0001227	LOOM
http://www.w3.org/2008/05/skos-xl#Label	http://purl.obolibrary.org/obo/CHEBI_35209	LOOM