PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Suitable electron acceptor materials include electron deficient compounds such as, for example, tetracyanoquinodimethane and derivatives, thiopyranylidines, polynitrofluorenones, tetracyanoethylene (TCNE), chloranil, and other compounds commonly used as electron acceptors in charge transfer materials and electrophotography.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com