About: http://webisa.webdatacommons.org/376015182

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 inactive signal or signals may be an electrical signal at a voltage level intermediate to the first and second voltage levels, for example at a voltage level substantially half-way between the first and second voltage levels.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com