PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A mixture of chemicals, water, and sand would be pumped into the ground under extreme pressure to fracture the rock and release the trapped gas???and those chemicals could include carcinogens and other toxins.
http://www.w3.org/ns/prov#wasQuotedFrom
  • 5280.com