With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: A white man and an African American appear to be sitting in front of a scenery with plants and a tree. A white man and his black best friend are catching up at the park.
text_B: Above them is a large sign that reads 'Scenic Art Museum' and the two are not talking at all.
weakener.