Sickle Cell Disease Ontology	Data Collection Ontology	Source
http://purl.org/dco/v1#length_unit	http://purl.obolibrary.org/obo/UO_0000001	LOOM
http://purl.org/dco/v1#geographic_location	http://purl.obolibrary.org/obo/GAZ_00000448	LOOM