Task: Sentence Ordering
Input (English): Sentence1: Doug looked out the window and saw a blanket of white snow. Sentence2: When he woke up the next morning the room was filled with light. Sentence3: He prayed to God for snow and went to sleep. Sentence4: All Doug wanted was a white Christmas. Sentence5: Doug was sad it was Christmas Eve and there was no snow.
Output (English): 54321