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: Some guy is giving one of the girls a hard time at the bar. Sentence2: So Dan stands up to him. Sentence3: The guy challenges Dan to a fight outside and he accepts. Sentence4: Dan's friend tells him that the guy is a pro boxer.

When the guy leaves out the front Dan runs out the back.