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: I did a lot of mTurk work for Corbis. Sentence2: Corbis showed 40 photos. Sentence3: I had to say whether the photo agreed with a certain theme. Sentence4: Examples of themes were family, lifestyle, and summer.
I was unhappy when Corbis discontinued their business with mTurk.