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.

Ex Input:
Title: New Skills. Sentence 1: Alan needed to join in an extracurricular activity at school. Sentence 2: That was when he realized he did have a skill. Sentence 3: Then his English teacher pointed out to him his A grade. Sentence 4: He was confused because he believed he had no skills. Sentence 5: He joined the spelling team that same day.

Ex Output:
24

Ex Input:
Title: The Proposal. Sentence 1: A girl in the audience thought he was sweet and gave him her number. Sentence 2: He signed up and chose their special song to perform. Sentence 3: When it was his turn, he took the stage and proposed to her. Sentence 4: She was embarrassed and turned him down. Sentence 5: Barry wanted to propose to his girlfriend in a memorable way.

Ex Output:
15

Ex Input:
Title: Heavy Rain. Sentence 1: Ben was walking to school. Sentence 2: Since he was far away from the school, he got soaked. Sentence 3: A thunderstorm occurred. Sentence 4: He tried to find the nearest house or store for protection. Sentence 5: He found a small convenient store and stood there for an hour.

Ex Output:
23