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: Sean wanted to play his video games when he got home from school. Sentence2: Mom told him he had to do his homework first. Sentence3: Sean objected loudly, because he did not want to wait. Sentence4: Mom threatened to ground him for a month.

Sean sat down and started to do his homework.