Definition: In this task, you're given a four sentences of story written in natural language. Your job is to complete end part of the story by predicting appropriate last sentence which is coherent with the given sentences.
Input: Sentence1: David awoke to the acrid smell of smoke. Sentence2: The air in his room was hazy and it was hard to breathe. Sentence3: He dropped to the floor and touched the door, finding it cool. Sentence4: He heard sirens as he crawled down the hall to his sister's room.

Together, they escaped the fire and found their relieved parents.