About: http://webisa.webdatacommons.org/147205910

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 presence of a user can be determined, for example, using well-known situation-awareness methods, such as cameras or heat sensors, or an inference that the user is present when the device is turned on.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com