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: Bert went for a walk after work tonight. Sentence2: As he was walking down the street he saw an envelope. Sentence3: He picked it up to see if anything was in there. Sentence4: The envelope contained three thousand dollars.

That's why Bert takes a walk every night after work.