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: Jenny always likes to go to Starbucks. Sentence2: One day she was ordering her coffee. Sentence3: As she got to the window to pay, she was told it was already paid for. Sentence4: The person before her had paid.
Jenny paid for the order of the person behind her.