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: Alice was painting during art class. Sentence2: Her teacher pointed out a mistake in her portrait. Sentence3: And she quickly improved it. Sentence4: Alice proudly left her easel when she finished the portrait.

But she ended up knocking it on the floor.