IVOA Unified Astronomy Thesaurus (IVOA rendering)	EPNcore Target Classes	Source
http://www.ivoa.net/rdf/uat#interplanetary-medium	http://voparis-ns.obspm.fr/epn/target_class#interplanetary_medium	LOOM
http://www.ivoa.net/rdf/uat#calibration	http://voparis-ns.obspm.fr/epn/target_class#calibration	LOOM