premise: A tree worker with a hard hat is cutting down a branch. hypothesis: The man is wearing safety gear on his head.
entailment: A tree worker is wearing a hard hat on his head.|entailment: A hard hat is a safety gear to be worn on one's head.|entailment: The man is a tree worker. A hard hat is safety gear. The tree worker had a hard hat, therefore the man is wearing safety gear on his head.