Task: Sentence Ordering
Input (English): Sentence1: Now Grayson needs some money to help pay his rent. Sentence2: Grayson has collected stamps since he was a little kid. Sentence3: Sadly, he takes them into a pawn shop for sale. Sentence4: He gets much less for them than they are worth. Sentence5: He thinks of his stamp collection.
Output (English): 21453