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: Jake bought his family a new trampoline. Sentence2: They were scared to bounce on it. Sentence3: Jake climbed on to it and jumped up and down. Sentence4: When they saw it was safe, his family joined him.

Now Jake can't get them to stop, they're having so much fun.