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.
Q: Sentence1: It was reading time for Carl and his class. Sentence2: So everyone was required to choose a story to read. Sentence3: But Carl didn't see any books that he liked. Sentence4: So he decided to write his own story.
A: 
But when his teacher saw, he got in trouble.