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: It was dusk and shadows fell across the sidewalk as I walked home. Sentence2: The street was oddly deserted and I felt uneasy as twilight set in. Sentence3: Suddenly someone grabbed me from behind and I screamed! Sentence4: My friend Keith laughed so hard he was almost crying.

I gave him a good whack to let him know I didn't care for his joke.