PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Candidates are screened with a medical history, including questions about alcohol and drug use, physical examination, blood tests, breath alcohol tests, electrocardiogram (ECG), urine test for illicit drugs and, for women, a pregnancy test, and a stool test for hidden blood.
http://www.w3.org/ns/prov#wasQuotedFrom
  • clinicaltrials.gov