Task: Sentence Ordering
Input (English): Sentence1: Bill's father told him to keep practicing his piano scales. Sentence2: He bitterly sat at the piano, playing his scales over and over. Sentence3: As Bill got older, he realized all of that practice help him. Sentence4: He was an expert pianist, and wanted the same for his son. Sentence5: Bill was too young to understand the value of practice.
Output (English): 14523