About: http://webisa.webdatacommons.org/453290568

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 prior art is cognizant of many devices which operate to control the speed of a rotational tool such as a drill bit, a screw driver shaft, and other such tools as well.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com