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: Cameron decided to go rock climbing with his friends. Sentence2: He did not use a safety harness since he had climbed before Sentence3: He slipped and fell 30 feet to the ground. Sentence4: He broke his ankle and had to have surgery on his back.

Next time he goes climbing, he is using a harness.