Task: Sentence Ordering
Input (English): Sentence1: His mother saw his face when he walked in and asked what was wrong. Sentence2: He came home disappointed and without a gift. Sentence3: Dan wanted to find the perfect gift for his mother's birthday. Sentence4: Dan explained the situation and his mother was not upset. Sentence5: He shopped at the mall for hours and was unable to find anything.
Output (English): 43152