About: http://webisa.webdatacommons.org/5686443

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	One auto-expiration situation you still might have to handle is the case where their browser decides to eventually delete their cookies, including any authentication tokens.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com