Task: Sentence Ordering
Input (English): Sentence1: The veterinarian confirmed that Tigger did indeed have fleas. Sentence2: Alex suspected that his cat Tigger might have fleas. Sentence3: Alex took Tigger to the veterinarian to be diagnosed. Sentence4: Tigger was constantly scratching himself day and night. Sentence5: They gave him a flea medication and it cleared up.
Output (English): 41325