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: Leon and Seth had always been rivals. Sentence 2: One day, Seth challenged Leon to a chess game. Sentence 3: Leon didn't know how to play chess, but practiced every day. Sentence 4: Seth knew Leon didn't know how to play and assumed Leon would lose. Sentence 5: Leon won the chess game in record time.

Rivals