PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The GNU userland is an important part of most Linux-based systems, .... and were ported to other operating systems including Windows and Mac OS X due to their popularity. ....
http://www.w3.org/ns/prov#wasQuotedFrom
  • distrowatch.com