About: http://webisa.webdatacommons.org/155128356

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 amount of time that an sign in remains fresh can be determined by the system operator or by the user and can range for example from a few minutes to many days.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es