PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Sheet metal screw (self-tapping screw, thread cutting screws) : Has sharp threads that cut into a material such as sheet metal, plastic or wood.
http://www.w3.org/ns/prov#wasQuotedFrom
  • reference.com