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: Don noticed a fly go into the living room. Sentence2: He decided to swat it. Sentence3: He tried for half an hour but it kept evading him. Sentence4: Eventually the fly flew out on its own.

Don closed the door it flew out of.