With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: A kayaker wearing a blue wetsuit and black helmet paddles his yellow kayak in murky rolling rapids. A kayaker is paddeling a kayak in rapids with a group of his friends in other kayaks.
text_B: The kayaker paddles his kayak as he looks ahead of him at others paddling kayaks.
strengthener.