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: Smokey Meat. Sentence 1: Ken liked to saute vegetables for his meals. Sentence 2: Ken felt really embarrassed about it. Sentence 3: One time it was so bad, the whole apartment was evacuated. Sentence 4: When he cooked, the heavy smoke would set off the alarms. Sentence 5: He uses multiple fans when he cooks now.
A:
42