PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • After centuries spent working on individual equations, they began to concentrate more on the patterns and symmetries to be found in different types of equations and their solutions.
http://www.w3.org/ns/prov#wasQuotedFrom
  • economist.com