With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: Two women relax at home on a futon-style couch amidst pillows and a pile of clothing, with an array of photographs on the wall behind them. The women are friends.
text_B: One of the pictures behind them is of the two of them in a frame that says "best friends."
strengthener.