Harry is not big. Harry is blue. Harry is furry. Harry is not green. Harry is rough. Harry is smart. Harry is white. If Harry is rough and Harry is green then Harry is smart. If something is big and not green then it is furry. If something is rough and smart then it is blue. If something is rough and not green then it is white. If Harry is big then Harry is not green. If something is not furry and not blue then it is white.
Harry is not rough.