Detailed Instructions: 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.
Problem:Sentence1: A child rolled a ball down a grassy hill. Sentence2: The ball kept rolling until it went halfway up the other hill nearby. Sentence3: Then the ball rolled back and settled in the middle of the two hills. Sentence4: The child himself rolled down the hill after the ball.
Solution:
He was disappointed he didn't also roll halfway up the other hill.