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.
Q: Title: A Wall of Burning Books. Sentence 1: It was almost like he was burning the nasty, frightful ideas inside. Sentence 2: He got a job just to earn money to buy books and burn them. Sentence 3: Donald felt very pleasant every time he burned a book. Sentence 4: Donald didn't like books, not one bit. Sentence 5: Donald hoped to achieve the power to do it on a large scale some day.
A:
41