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: The teacher was getting frustrated. Sentence2: The students were fooling around and not paying attention. Sentence3: She began to write a difficult problem on the board. Sentence4: Someone threw a paper airplane at her.

She left the room sobbing and never taught again.