PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Carbon dioxide is an important trace gas because its molecular structure traps heat that would otherwise radiate back out to space.
http://www.w3.org/ns/prov#wasQuotedFrom
  • booksandculture.com