Task: Sentence Ordering
Input (English): Sentence1: Ava needed to go shopping with her two-year old. Sentence2: Ava took good care of her son. Sentence3: She carried him into the store in order to select a new pair. Sentence4: But she couldn't find his shoes even after looking everywhere! Sentence5: She decided she had no choice but to buy him new shoes.
Output (English): 15423