About: http://webisa.webdatacommons.org/369924987

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	Alternatively, the intercom mode may begin when the other user at the base unit responds to an alert, such as an audible signal, by activating a key on the base unit.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com