About: http://webisa.webdatacommons.org/444285134

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	The link check program is free and they could install it on their own servers (and send them a heads up when there is a problem).
http://www.w3.org/ns/prov#wasQuotedFrom	washingtonpost.com