With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: A woman in a grassy field blows on a dandelion. A woman is lost in a grassy field, she blows on a dandelion to see which way the wind blows.
text_B: Her little child is delighted, that's the first time they've seen a dandelion.
weakener.