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: Billy wanted to become a doctor. Sentence2: He went to college to become a doctor. Sentence3: After he graduated with his degree, he changed his mind. Sentence4: Billy became a nurse instead of a doctor.

He never regretted his decision.