PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, the study also found that the water contained dangerous levels of methane as well as lower levels of other chemicals that cause cancer and other illnesses.
http://www.w3.org/ns/prov#wasQuotedFrom
  • fool.com