PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Oils and greases are commonly used for lubricating, rotating and sliding systems such as bearings, gears, connectors, etc.
http://www.w3.org/ns/prov#wasQuotedFrom
  • science.gov