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: Tom liked to box. Sentence2: He would practice all the time. Sentence3: He asked a friend to join him. Sentence4: The friend never done that before.

Tom accidentally knocked his friend out cold!