About: http://webisa.webdatacommons.org/251091919

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	Specifically, the watcher is a terminal device for accepting the presence information owned by a presentity.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com