With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: Swimmer in a red bathing suit, white cap, and blue goggles emerging from the water The swimmer is practicing his/her breaststroke in preparations for taking their lifeguard exam.
text_B: The swimmer is practicing his/her breaststroke in preparation for taking their lifeguard exam before summer camp season.
strengthener.