Instructions: In this task, you're given the title of a story consisting of five sentences, numbered 1 through 5. Your job is to determine which two sentences need to be swapped sentences in order to make a story that makes complete sense and is befittingly titled. Indicate your answer using the numbers of the two sentences in order, such as '34' or '25'. The first digit refers to the sentence which should come first in the story.
Input: Title: Johnny Makes A Friend. Sentence 1: Johnny was starting his first day at a new school. Sentence 2: He was worried that it would be difficult to meet people. Sentence 3: However, he met someone nice after his first class. Sentence 4: Johnny was happy he had met someone nice at his new school. Sentence 5: They sat together at lunchtime.
Output:
54