PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • PetroChina engages in a wide range of activities related to oil and natural gas including petrochemicals, polymers, synthetic rubbers and fertilizers as well as a broad range of petroleum-related activities.
http://www.w3.org/ns/prov#wasQuotedFrom
  • icis.com