if something is made of something else, then that something else can be lost in that something
separated_thing is divided_thing. pawn is tangible_thing. else is river. stealing_storage_space is unnatural_thing. change is when_one_thing_becomes_another_thing. goods is tangible_thing. thing is artifact. lost_river is tangible_thing. lost_river is natural_thing. stealing is unnatural_thing.