Definition: In this task, you're given five sentences, numbered 1 through 5. Your job is to generate a title for the story that makes complete sense. The title must be short, with less than three words, use simple language, and include the main topic of the story.
Input: Sentence 1: When Nelson took his son to school, he remained in the parking lot. Sentence 2: Although he parked in the handicapped section, he wasn't afraid. Sentence 3: A few days later, Nelson received an envelope. Sentence 4: It was a bill. Sentence 5: He realized that it was a driving citation for parking.

Citation