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: Nate bragged to his friends about his athleticism. Sentence2: He told them that he can easily swing from the monkey bars. Sentence3: His friend made a bet with him. Sentence4: Therefore, he approached the monkey bars.

However, he ended up falling on his head.