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: There was a rumour in town that there was pirate gold under the lake. Sentence2: A diver jumped in one day to look for it. Sentence3: In the lowest part of the lake he found a chest with a lock. Sentence4: He brought it back to the surface to open.

The chest was full of rocks so he locked it up and tossed it back in.