Task: Sentence Ordering
Input (English): Sentence1: A duck was found and stared at. Sentence2: One man bet another that he could outstare a duck. Sentence3: Although the duck was unaware of what was happening, it did not blink. Sentence4: The man eventually blinked. Sentence5: It did, however, wet its eyes with its nictitating membrane.
Output (English): 21354