About: http://webisa.webdatacommons.org/328310272

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	For circuits 20, 22 in which 5.0 volts is a logic high and 0.0 volts is a logic low, reference voltages Vh and Vl of 5.0 volts and 0.0 volts may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com