With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: Four men, one in a long blue robe, looking like they are doing laundry in a muddy pit in a 3rd world country. Four men who live in a third world country are talking and laughing as they do laundry in a muddy pit.
text_B: The pit is full of expensive exfoliating mud mask mud.
weakener.