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: I walked inside of the dentists office. Sentence2: After signing the attendance board, the dentist greeted me. Sentence3: He showed me where to sit. Sentence4: Afterwards, he started to operate on my teeth.

I was nervous but he reassured me that everything was fine.