PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Apple also released a matching security update for Mac OS X 10.5, or Leopard, users.Mac OS X 10.6.5 and Security Update 2010-007 address a well publicized security threat where documents such as PDFs containing maliciously crafted embedded fonts could let an attacker remotely gain control over a user???s computer.
http://www.w3.org/ns/prov#wasQuotedFrom
  • macobserver.com