PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Several methods for producing ferrous carbonate are known, each of which suffers from disadvantages such as impractical expense or production of a highly impure and unuseable product.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com.au