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: The boy had many collections of toys. Sentence 2: His biggest collection was nerf guns. Sentence 3: He loved running around the neighborhood shooting his friends. Sentence 4: His newest nerf gun shot 80 bullets in a minute! Sentence 5: The boy hoped he'd never grow out of playing with nerf. Choices: a. The Owl.. b. The Nerf Guns.

b