With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: A man in a blue swimsuit and a red beanie kneels in the wet sand on the edge of a beach, making a sand castle that is as tall as he is when he is kneeling. An old man in a blue swimsuit and red beanie is building a sand castle on a private beach.
text_B: The man is in front of his beach house.
strengthener.