PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The result is an atmosphere that is roughly 90 percent nitrogen and 7 percent methane. (Interestingly, as radically different as Titan's atmosphere is to our own, it is still worlds closer in composition and pressure to Earth's nitrogen-rich air than are the CO2-dominant atmospheres of either Mars or Venus.)
http://www.w3.org/ns/prov#wasQuotedFrom
  • pbs.org