PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A lead is a specific action determined by each advertiser, such as filling out a form, signing up for a newsletter, completing a survey, participating in a contest or subscribing to a free trial.
http://www.w3.org/ns/prov#wasQuotedFrom
  • searchenginestrategies.com