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: I began to amass a huge collection of books. Sentence 2: Most of them were thick and very verbose. Sentence 3: Some were simple, such as collectible comic books. Sentence 4: Soon we filled an entire wall of shelves with our book collection. Sentence 5: Now we can choose to read anything at any time. Choices: a. Books. b. Hair.

a