Task: Sentence Ordering
Input (English): Sentence1: Jack paused to take a picture, leaning to get a good shot angle. Sentence2: Jack and Chad climbed down the Grand Canyon Wall. Sentence3: Needles were now stuck in Jack's pants. Sentence4: Jack accidentally sat on a cactus. Sentence5: It took 20 minutes to remove the needles and continue climbing.
Output (English): 21435