About: http://webisa.webdatacommons.org/12222713

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	In order to maintain data integrity, no two users may modify data, for example message data in an email system, at the same time.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com