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: The deal seemed too good to be true. Sentence2: He was buying the Brooklyn Bridge. Sentence3: Was this official selling to him actually a con artist? Sentence4: The official made an allusion to needing a bribe.
As he passed the envelope he knew the deal was legitimate.