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: The Research Project. Sentence 1: Penelope had a very big project coming up for school. Sentence 2: She worked very hard. Sentence 3: She turned it in and aced it. Sentence 4: She felt very good about her work on the project. Sentence 5: Penelope did all of her research.
Output:
53