PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • If no standard treatment is available, a trial may compare the study drug to a placebo, which is similar to the study drug, but contains no active ingredient.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ormc.org