About: http://webisa.webdatacommons.org/166392064

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 shaft has a pitch such as a screw so that as the motor turns the shaft, the light sensor moves upwardly or downwardly.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca