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: Dan was sure that he was over his ex girlfriend. Sentence2: Until a mutual friend posted a picture of her in a restaurant. Sentence3: The picture brought Dan back to the good times. Sentence4: He felt regret.

Dan decided to call his old girlfriend.