PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In many industries including oil, gas and petrochemicals, energy costs can represent 30 to 50 percent of the total production cost.
http://www.w3.org/ns/prov#wasQuotedFrom
  • abb.com