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: A small snowstorm came through a town. Sentence2: The school roof buckled under the weight. Sentence3: A janitor climbed on top to inspect. Sentence4: The roof shook under the new weight.

The janitor was frightened.