PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Houston-based employee-owned Centaurus invested in derivatives such as futures, options, and OTC swaps for commodities such as power, coal, natural gas and crude oil .
http://www.w3.org/ns/prov#wasQuotedFrom
  • opalesque.com