PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Barrett's is a condition in which the cells lining the lower esophagus change because of repeated exposure to stomach acid.
http://www.w3.org/ns/prov#wasQuotedFrom
  • mcancer.org