SNOMED CT	Research Variable Ontology	Source
http://xmlns.com/foaf/0.1/Person	http://purl.bioontology.org/ontology/SNOMEDCT/125676002	LOOM
http://w3id.org/rv-ontology#Variable	http://purl.bioontology.org/ontology/SNOMEDCT/255372005	LOOM
http://w3id.org/rv-ontology#Measure	http://purl.bioontology.org/ontology/SNOMEDCT/246445000	LOOM