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: Howard was getting bullied. Sentence 2: He did not know what to do. Sentence 3: His friend ended up standing up to the bully. Sentence 4: His friend beat the bully up. Sentence 5: The bully did not bother howard anymore. Choices: a. Bullies. b. Sister.

a