With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: One man wearing a striped shirt and sunglasses jumps in the air next to another man in a black graphic tee leaping in the air with his arms outstretched in front of a building. they are posing
text_B: The men are flailing widly and not looking at the camera.
weakener.