PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • That problem has made it more difficult for Yahoo to sell the online advertising that generates most of its revenue.Until a slight increase last year, Yahoo???s revenue had been steadily declining since 2008, while rivals such as Google and Facebook Inc reveled in robust growth.
http://www.w3.org/ns/prov#wasQuotedFrom
  • taipeitimes.com