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: Rob wanted to take a vacation to Canada. Sentence2: To travel to Canada, Rob needed a passport. Sentence3: Rob paid the passport agency a lot of money to have it delivered fast. Sentence4: However, the passport agency shipped Rob's passport way too late.

Rob had to book another flight, which cost him an arm and a leg.