PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The witness said, It would have appeared to have been an airplane or such, except for the fact that it was going straight down at rapid speed and then disappeared.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ufoinfo.com