About: http://webisa.webdatacommons.org/316614208

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 screw, and several types of gears (spur, bevel, herringbone, spiral, worm, etc.).
http://www.w3.org/ns/prov#wasQuotedFrom	robotbooks.com