Given the task definition and input, reply with output. 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.

Sentence1: Will really liked Ally, who sat behind him in History class. Sentence2: One day Ally told Will that his rolled up sleeves made him look tough. Sentence3: Since then Will began rolling up his sleeves. Sentence4: One day a new kid came to school.
He beat Will up because he wanted to take out the toughest kid.