With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: Kids riding on their bicycles near a mound of dirt with a hovel from a backhoe in front of the mound. The backhoe has recently made mounds of dirt for the children to enjoy riding bikes on.
text_B: There are shovels on the ground near the mound of dirt.
weakener.