PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Unfortunately, surfaces typically become soiled rapidly due to environmental contaminants such as dust and due to the deposit of dirt and debris and liquids by people, machines, and pets.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com