PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The feedstocks for ethylene production are typically natural gas liquids or petroleum distillates such as naphtha and gas oil.
http://www.w3.org/ns/prov#wasQuotedFrom
  • acs.org