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: Nancy was a cigarette smoker. Sentence2: Her best friend smoked as well. Sentence3: As they got older, Nancy's friend got cancer. Sentence4: Nancy became alarmed and treated it as a wake up call.

Nancy quit smoking after her friend died.