PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Our favorite galaxy-faring adventurers at NASA are inviting developers, scientists, and other problem solvers like you to participate in the second annual International Space Apps Challenge, which begins on April 20 at 75 locations around the world.
http://www.w3.org/ns/prov#wasQuotedFrom
  • popsugar.com