premise: A train conductor in coveralls is standing in the door of the trail. hypothesis: A train conductor is standing in a door.
entailment: A conductor is standing in the door of the trail.|entailment: The train conductor is standing in the door so therefore the second sentence is valid.|entailment: "A train conductor is standing in a door" is a form of "A train conductor in coveralls is standing in the door of the trail.".