premise: A man helping a young child up to a train engine, while a woman climbs up the steps behind them. hypothesis: A father is helping is young child get on a train as his wife, mother of the child climbs the steps of the train behind them.
entailment: Because the man is helping the young child, he is most likely the child's father. Since the woman is directly behind them, it is probable that she is the wife of the man and mother of the child.