About: http://webisa.webdatacommons.org/291829131

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	Some synchronous motor drive systems employ position sensors such as resolvers and Hall effect sensors coupled to a rotor shaft of the motor to provide such information.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com