About: http://webisa.webdatacommons.org/324376920

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	Another variation is a system that shows a message to a user selected at random from a pool of volunteers; at that point, the user rates the message upon given criteria.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com