With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: A man with a black t-shirt on with adidas written across the front and a woman with a white t-shirt on and a silver bangle on her left wrist sitting next to their bike on the ground in the park eating ice cream while people enjoy themselves all around them The man is the President.
text_B: The president has several hidden secret service guards watching him closely.
strengthener.