Definition: In this task, you're given the title of a five-sentence story and the first four sentences. Your job is to write the last sentence of the story such that it seamlessly connects with the rest of the story.
Input: Title: Good cop, bad cop. Sentence 1: Alan was a good cop. Sentence 2: He never yelled or used violence to resolve crime. Sentence 3: But as crime escalated in his city, he had to change. Sentence 4: Over the years, he toughened up.
Output:
He was disheartened to realize he was a bad cop after ten years.