The Prescription of Drugs Ontology	Reference Sequence Annotation	Source
http://rdf.biosemantics.org/ontologies/rsa#Region	http://purl.obolibrary.org/obo/SO_0000001	LOOM
http://rdf.biosemantics.org/ontologies/rsa#SequenceAnnotation	http://purl.obolibrary.org/obo/OBI_0001944	LOOM
http://rdf.biosemantics.org/ontologies/rsa#Orientation	http://purl.obolibrary.org/obo/PATO_0000133	LOOM