PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • There???s no reason why the water used for fracking should be particularly carcinogenic ??? the chemicals in it are in tiny amounts, mainly for reducing the surface tension to improve penetration (like soaps).
http://www.w3.org/ns/prov#wasQuotedFrom
  • moneyweek.com