PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • As awful as it sounds, when the bottom fell out of the S & P 500 in March, 2009, with what ultimately was a more than 40% drop in the average, P& G dropped only half as much, to 20%.
http://www.w3.org/ns/prov#wasQuotedFrom
  • seekingalpha.com