PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Our research and development involves in several lubricating fields, such as automobiles, engineering machinery, ships, generating sets, industrial facilities and metallurgy.
http://www.w3.org/ns/prov#wasQuotedFrom
  • alibaba.com