PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Drilling and fracking use different types of chemicals that may affect the environment and public health, especially if they seep into groundwater.
http://www.w3.org/ns/prov#wasQuotedFrom
  • environmentalleader.com