Task: Sentence Ordering
Input (English): Sentence1: At first he cannot remember where it might be. Sentence2: Rufus returns to the bar to get his hat. Sentence3: He sees his hat hanging on moose antlers behind the bar. Sentence4: Finally he realizes he wore it to the bar last night. Sentence5: Rufus wakes up and notices that his hat is gone.
Output (English): 24531