PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Clocks, lasers, and other resonating systems that need either strong resonance or high frequency stability have high quality factors.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wikipedia.org