PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Comets can be fairly unpredictable, and other comets that have come that close to the Sun???such as Comet Elenin in 2011, Comet LINEAR in 1999 and Comet Kohoutek in 1973???failed to live up to expectations of brightness and visibility.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org