Detailed 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.
Q: Title: Genny Back. Sentence 1: Wendy came to pick up Seth's generator. Sentence 2: He started it to show her that it worked. Sentence 3: When it was Wendy's turn to start it, it wouldn't start. Sentence 4: They figured out the throttle needed to be pulled out just a little. Sentence 5: Seth and Wendy messed up with it for a bit.
A:
54