Task: Sentence Ordering
Input (English): Sentence1: The younger skaters taught Morris a lot of tricks. Sentence2: He notices that he is much older than the other people there. Sentence3: Morris buys himself a skateboard to stay active. Sentence4: However, they welcome him, and they don't seem to mind his age. Sentence5: He brings the skateboard to the park for a day of skateboarding.
Output (English): 53142