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: Mark's Broken Arm. Sentence 1: When Mark was in first grade he slipped off the jungle gym at school. Sentence 2: As he hit the ground, Mark felt a sharp pain his his left wrist. Sentence 3: Mark's teacher sent him to the school nurse. Sentence 4: The school nurse could tell his arm was broken and called Mark's mom.
When she got there, Niki and Bumper were waiting at the curb!