With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: Shirtless man wearing rollerskates in a large crowd with a sweat towel that reads "just love me". The sweat towel that a man has was given to him as a gift.
text_B: An onlooker woman remarks 'He sure does love the birthday towel I gave him'
strengthener.