PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • ???Level 1 ??? Quoted prices in active markets for identical assets and liabilities. ???Level 2 ??? Observable inputs other than quoted prices in active markets for identical assets and liabilities.
http://www.w3.org/ns/prov#wasQuotedFrom
  • sec.gov