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: Casey was hoping to make black belt in karate before summer. Sentence2: His master told him he would have to practice even harder. Sentence3: Casey stayed late to practice his moves. Sentence4: He even took extra classes when he could.

Casey was able to earn his black belt right before summer break.