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: Rob wanted to become a boxer. Sentence 2: He joined a gym and began training. Sentence 3: He worked hard and learned skills rapidly. Sentence 4: Rob stepped into the ring for his first public fight. Sentence 5: Rob knocked out his opponent in the first round!

Boxer