Assertion: punching bag | /r/MadeOf | leather
Facets:
Source sentences:
text: In general, punching bags are made of leather.
text: Punching bags may be made from canvas, nylon, leather or vinyl.
text: In general, punching bags are made of either leather or a synthetic material, such as vinyl or plastic.
text: Punching bags can be made of leather, vinyl or canvas.
text: Punching bags may be made from canvas, nylon, leather or vinyl.