premise: A rescue worker searches with a flashlight under a slab in a ruined building. hypothesis: A worker searches a ruined building.
entailment: Rescue workers are workers, and they are searching under a slab. The slab is in a ruined building, therefore the worker is searching a ruined building.|entailment: Rescue worker is a type of worker.|entailment: The worker being a rescue and looking under a slab connotes the building is ruined.