Bob is big. Bob is quiet. Bob is red. Bob is rough. Bob is round. Bob is white. Bob is young. Charlie is big. Charlie is quiet. Charlie is red. Charlie is not rough. Charlie is round. Charlie is not white. Charlie is young. If Charlie is rough and Charlie is red then Charlie is not young. If something is rough and not white then it is quiet. If something is red and not quiet then it is not young.
Bob is not rough.