PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In Colorado, strict air pollution rules were approved such as requiring oil and gas companies to regularly monitor and repair leaks of gases that could affect the environment.
http://www.w3.org/ns/prov#wasQuotedFrom
  • infoplease.com