PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The so-called cracker plant would convert natural gas liquids from Marcellus Shale into more profitable chemicals such as ethylene, which is used to make plastics, tires and antifreeze and other products.
http://www.w3.org/ns/prov#wasQuotedFrom
  • observer-reporter.com