About: http://webisa.webdatacommons.org/191522847

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	According to Pareene and others, the answer was a 2008 change in how ratings-tracker Arbitron determines listenership, away from the survey system to the Portable People Meter.
http://www.w3.org/ns/prov#wasQuotedFrom	wnd.com