Task: Sentence Ordering
Input (English): Sentence1: When he entered the building he was greeted warmly by many people. Sentence2: Mark was starting a new job the next day. Sentence3: He was nervous about being around so many strangers. Sentence4: He barely slept any the night before due to anxiety. Sentence5: He realized he would fit in perfectly at the new job.
Output (English): 41235