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: I arrived to the pizza place since my delivery was made. Sentence2: The cashier gave me my orders and took down the payment. Sentence3: Before going into the car, I checked the pizza. Sentence4: Unfortunately, I noticed that the entire pizza is tough and stale.

Luckily, I received a refund on the purchase.