Given the task definition and input, reply with output. In this task, you're given the title of a five-sentence story and the first four sentences. Your job is to write the last sentence of the story such that it seamlessly connects with the rest of 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 had hired a nanny to watch them. Sentence 4: Bob came home one day and one of his kids had bruises on her arm.
Bob decided to take legal action and fire his nanny.