With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: Onlookers behind a fence watch and someone rushes to help as a white and brown speckled bull thrashes around and the rider falls to the ground. The bull is hurting people.
text_B: The rider can't move so the clowns jump out to get the bull away from the rider.
strengthener.