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: Gordon bought his son a remote control car for Christmas. Sentence2: But he realized that it needed AA batteries. Sentence3: Gordon could not find any. Sentence4: So the next day, he went to the toy store where he bought the car.

He bought a big package of AA batteries.