Q: 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.
Title: Broken Air Conditioner. Sentence 1: Dan was awakened by a sudden heat in his apartment. Sentence 2: At first, Dan thought the electricity had went out. Sentence 3: Dan immediately called the landlord to rectify the issue. Sentence 4: However, upon looking, Dan realized his AC stopped working. Sentence 5: Dan was not pleased that his air conditioner had broken.
A:
34