PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • If hydrogen, helium, and other elements were present in the same proportions as in the Sun???s atmosphere, Saturn???s atmosphere would be about 71 percent hydrogen and 28 percent helium by mass.
http://www.w3.org/ns/prov#wasQuotedFrom
  • britannica.com