Bob is big. Bob is not quiet. Bob is rough. Bob is round. Bob is smart. Bob is white. Bob is young. Harry is big. Harry is quiet. Harry is rough. Harry is round. Harry is smart. Harry is white. Harry is not young. All young, quiet things are not big. If something is rough and not young then it is quiet. If Harry is round and Harry is big then Harry is rough. If Harry is young then Harry is smart. If something is not white then it is quiet. All white, smart things are round. If something is not smart then it is round. If Harry is young and Harry is not round then Harry is rough.
Bob is not white.