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: Mischievous Max had a plan for the frog he had captured. Sentence2: He thought it would be funny to stick it into his neighbor's mailbox. Sentence3: He hid in the bushes to wait for her reaction. Sentence4: When she opened her mailbox, the frog jumped out!

Her shrill scream made Max regret what he had done.