About: http://webisa.webdatacommons.org/278464280

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, line 144 could apply a signal derived from a speed indicating device, e.g. a tachometer mounted on the motor.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca