About: http://webisa.webdatacommons.org/331605451

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	Such a signal is an indication by the central computer that the communication has come to an end, and the control circuit 30 accordingly goes on hook by opening contacts 20 and by closing contacts 24 and 26 of FIG. 1 if they are open.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr