Bob is nice. Erin is nice. Erin is red. Erin is not rough. Gary is not rough. Gary is round. Harry is smart. If something is round and not nice then it is smart. If Harry is red and Harry is not young then Harry is quiet. If something is not young and not round then it is red. If Bob is round then Bob is red. If Bob is not nice then Bob is rough. If something is young and not rough then it is not smart.
Bob is not rough.