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: Jack and Chad climbed down the Grand Canyon Wall. Sentence2: Jack paused to take a picture, leaning to get a good shot angle. Sentence3: Jack accidentally sat on a cactus. Sentence4: Needles were now stuck in Jack's pants.

It took 20 minutes to remove the needles and continue climbing.