premise: A man lying on the grass on a rugby field, holding a rugby ball. hypothesis: A man lying in the grass holding on to a ball.
entailment: Lying on the grass of rugby field is a man holding a ball.|entailment: If a man is lying on the grass on a rugby field and holding a rugby ball, he must be a rugby player.|entailment: Lying on the grass is the same as lying in the grass.