With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: A woman holding a pink balloon and wearing a fuzzy pink tiara, and a man with his head tilted slightly forward and smiling with his mouth wide open are standing next to one another. An engaged couple stand next to each other, one holding a balloon, the other with his mouth open.
text_B: A happy couple are enjoying themselves at their engagement party.
strengthener.