Task: Sentence Ordering
Input (English): Sentence1: From then on, she swims the backstroke constantly. Sentence2: Laura has always loves swimming, but she has never tried backstroke. Sentence3: One day she decides to take backstroke lessons from an expert swimmer. Sentence4: She finds that she loves backstroke and doesn't get water in her ears. Sentence5: She usually avoids backstroke because doesn't want water in her ears.
Output (English): 51342