Task: Sentence Ordering
Input (English): Sentence1: During the race he felt frustrated when so many people passed him. Sentence2: Tommy trained hard to run his first 5K. Sentence3: When he heard his name called during awards he was shocked. Sentence4: He didn't realize they would do awards by age group. Sentence5: He was proud to finish first by age but tenth overall.
Output (English): 21345