About: http://webisa.webdatacommons.org/28260440

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	It also often requires a direct response, such as clicking on a link, though the response may simply be remembering the message if it's, say, an advertisment.
http://www.w3.org/ns/prov#wasQuotedFrom	slashdot.org