With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: A bike rider with khaki green shorts, a blue shirt, backpack and helmet is riding on the street near a red station wagon that is missing a hubcap on the back drivers side. A man is riding his bike to work.
text_B: The backpack is full of books he's reading for fun and a picnic lunch.
weakener.