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 to not connect with the rest of the story. Ensure that the generated sentence is contextually relevant to the story.

Title: Problem Child. Sentence 1: My niece's youngest child is 9. Sentence 2: Bob has behavioral issues. Sentence 3: If he does not get what he wants, he swears and acts out. Sentence 4: Last week he punched two holes into the wall.
They all ran off before the train passed.