Definition: In this task, you're given five sentences, numbered 1 through 5, and two options a and b for possible titles for the story. Your job is to choose the title that better fits the story. Indicate your choice by 'a' or 'b'.
Input: Sentence 1: Jeff was walking down the hallway at school. Sentence 2: He saw the school bully picking on a kid. Sentence 3: Jeff told him that would be enough. Sentence 4: The bully turned around and laughed at Jeff. Sentence 5: Jeff knocked the bully out cold with one punch. Choices: a. Lyle wins first place. b. Jeff beats the bully.

b