About: http://webisa.webdatacommons.org/280649409

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	They collect these information from several sources such as news articles, books, digital libraries, e-mail messages, web pages, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	tutorialspoint.com