Task: Sentence Ordering
Input (English): Sentence1: Mark was starting a new job the next day. Sentence2: He realized he would fit in perfectly at the new job. Sentence3: He was nervous about being around so many strangers. Sentence4: When he entered the building he was greeted warmly by many people. Sentence5: He barely slept any the night before due to anxiety.
Output (English): 15243