PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The dominant skeptical explanation seems to be that the lights are a sort of mirage caused by sharp temperature gradients between cold and warm layers of air.
http://www.w3.org/ns/prov#wasQuotedFrom
  • theunexplainedmysteries.com