About: http://webisa.webdatacommons.org/139310433

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	Browsers such as Firefox 3.5 and Safari 4 use this new header to allow the cross-origin HTTP requests with XMLHttpRequest that would otherwise have been forbidden by the same-origin policy.[7]
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com