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: Stood Up. Sentence 1: Jake stopped talking to her after. Sentence 2: She reluctantly agreed. Sentence 3: Jake set up what he thought was a perfect date. Sentence 4: She never showed up for it. Sentence 5: Jake asked his crush on a date.
Output:
15