About: http://webisa.webdatacommons.org/425943953

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 user id is a string e.g. USER_1234, so it works well, but thanks for the additional information!
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com