Assertion: wheel's part | /r/HasProperty | main
Facets:
Source sentences:
text: A 3 piece wheel has three main parts: a center, the outer hoop or "lip", and the inner hoop.
text: A railroad wheel typically consists of two main parts: the wheel itself, and the tire (or tyre in British English) around the outside.
text: A modern wooden wheel generally consists of three main parts, the nave or hub at the centre of the wheel, the spokes radiating out from the centre and the felloes or rims around the outside.