PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The latter cause formation and accumulation of water in the oil; solid insulation of transformers deteriorate over time, releasing products of degradation into the oil; after all, the oil itself ages and degrades, and products of its decay, including additives, forms sludge.
http://www.w3.org/ns/prov#wasQuotedFrom
  • environmental-expert.com