Given the task definition and input, reply with output. 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.

Sentence1: After dinner, I went for a short walk. Sentence2: John called and told me to meet him at the movies at nine. Sentence3: When I looked down, my watch read three o'clock. Sentence4: I was confused because it was dark outside.
I soon realized the battery in my watch died.