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: Late Again. Sentence 1: Sam finally got to the church. Sentence 2: He was running late. Sentence 3: Sam was going to a wedding. Sentence 4: It was empty by the time he arrived. Sentence 5: Sam was more late than he thought.
Output:
31