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: One night, a group of friends decided to play with a Ouija board. Sentence2: It was all in fun, and they played for an hour. Sentence3: After playing, they laid down for bed. Sentence4: Minutes later, they heard a strange banging sound on the floor.

They all freaked out naturally.