PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • anything that would make participation unsafe (e.g., have pacemaker or other metallic implant) or uncomfortable (e.g., chronic pain)
http://www.w3.org/ns/prov#wasQuotedFrom
  • clinicaltrials.gov