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: Jim lost his hat at the train station. Sentence2: He put up posters of his hat. Sentence3: After a week, someone called Jim. Sentence4: She had found his hat on a bench.

She returned it him and he bought her dinner to say thank you.