if something is made of something else , then that something else will be the shells of that something
pawn is not tangible_thing. separated_thing is divided_thing. thing is not substance. separated_thing is not divided_thing. sheet_of_substance is not tangible_thing. making_shells is not making. goods is not tangible_thing. matter is not tangible_thing. metal is not tangible_thing. fault is not tangible_thing.