Physical Activity Ontology	Healthcare Common Procedure Coding System	Source
http://purl.bioontology.org/ontology/HCPCS/A9300	http://www.semanticweb.org/hyk038/ontologies/2018/7/untitled-ontology-17#Exercise_equipment	LOOM
http://purl.bioontology.org/ontology/STY/T052	http://www.semanticweb.org/hyk038/ontologies/2018/7/untitled-ontology-17#Activity	LOOM