PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Fifteen to twenty minutes is a reasonable length of time in which you can expect to get your points across while maintaining your audience???s attention.
http://www.w3.org/ns/prov#wasQuotedFrom
  • americanbar.org