Given the task definition and input, reply with output. 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: Bob fires his nanny. Sentence 1: Bob was a very busy businessman. Sentence 2: He didn't have much time to look after his 2 young ones. Sentence 3: Bob came home one day and one of his kids had bruises on her arm. Sentence 4: Bob had hired a nanny to watch them. Sentence 5: Bob decided to take legal action and fire his nanny.
34