SNOMED CT	Reference Sequence Annotation	Source
http://rdf.biosemantics.org/ontologies/rsa#Region	http://purl.bioontology.org/ontology/SNOMEDCT/410673009	LOOM
http://rdf.biosemantics.org/ontologies/rsa#Orientation	http://purl.bioontology.org/ontology/SNOMEDCT/43173001	LOOM