PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Clinical trials are designed to demonstrate a benefit of a drug compared to some comparator, such as placebo or another drug.
http://www.w3.org/ns/prov#wasQuotedFrom
  • policymed.com