Task: Sentence Ordering
Input (English): Sentence1: Sharon can't believe that so much time passed so fast. Sentence2: But she is as happy today as she was the day they met. Sentence3: Now they are expecting their first great grandchild. Sentence4: Robert and Sharon met at band camp when they were in high school. Sentence5: By the time they graduated they had plans to marry.
Output (English): 45312