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: Polly was worried when her house cat escaped into the yard. Sentence2: Her mom assured her she would come back. Sentence3: A few hours later she reappeared with something in her mouth. Sentence4: She had bought the family a mouse as a gift.

She dropped it at Polly's feet, looking proud.