With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: A young man in sneakers and a red jacket is posing with one hand on the ground and the other raised in the air. A young man in sneakers, red jacket and blue jeans is posing with one hand on the ground and the other in the air.
text_B: The man's knees are covered in tattoos.
weakener.