About: http://webisa.webdatacommons.org/354767175

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	A wheel and axle is a simple machine that consists of two connected rings or cylinders, one inside the other, which both turn in the same direction around a single center point.
http://www.w3.org/ns/prov#wasQuotedFrom	ck12.org