PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Before asking each question, they flashed a series of lights indicating whether the question would be about langauge or math, and whether it would be easy or hard.
http://www.w3.org/ns/prov#wasQuotedFrom
  • grist.org