Task: Sentence Ordering
Input (English): Sentence1: A doctor looked at it and told Ivan the bite was infected! Sentence2: Ivan bought mosquito repellent for his next hike. Sentence3: The bite was red and itchy, but it didn't bother him at first. Sentence4: Then it swelled up terribly and became sore. Sentence5: Ivan got bitten by a mosquito on a forest hike.
Output (English): 45231