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.

Example Input: Title: Roasting marshmallows. Sentence 1: Allie sat by the fire. Sentence 2: She had ruined them. Sentence 3: They looked good. Sentence 4: But all the sudden the marshmallows were burnt. Sentence 5: She wanted to roast marshmallows.
Example Output: 25

Example Input: Title: German. Sentence 1: He says that is too much food. Sentence 2: The husband is from India, and they have two children. Sentence 3: His wife makes lunches for the family. Sentence 4: She gives her husband two sandwiches. Sentence 5: Our friends are Indian and German.
Example Output: 51

Example Input: Title: First Day. Sentence 1: His parents will post the picture on Facebook. Sentence 2: His parents made him stand for pictures. Sentence 3: Danny tried to smile. Sentence 4: He looked cute in his uniform. Sentence 5: It was Danny's first day of school.
Example Output:
15