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: It was Mary's 15th birthday. Sentence2: She really wanted something special for her birthday. Sentence3: Her parents surprised her with a new bike! Sentence4: Mary rode her bike all afternoon.

She was exhausted by the end of the day.