PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Contrast-enhanced ultrasound is a technique currently used to detect blood flow in the heart, muscles, and other organs.
http://www.w3.org/ns/prov#wasQuotedFrom
  • clinicaltrials.gov