PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A byproduct of sour natural gas, the highly flammable substance is used to produce fertilizer, chemicals and other products.
http://www.w3.org/ns/prov#wasQuotedFrom
  • sulphuric-acid.com