About: http://webisa.webdatacommons.org/301263333

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	From what I know, Alexa is a company that publishes data about websites (amount of traffic, demographics, etc.) publicly.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com