PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • For example, it makes no sense to ask whether the universe exists or not; we know how to inquire whether a particular thing in the universe exists, but what criterion could we use to determine whether the universe itself exists?[9] Because the universe, by definition, is not part of a larger structure from which it can be distinguished, so the universe cannot meaningfully be said to exist.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ntu.edu.tw