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: Catherine grabbed her coloring books. Sentence 2: She enjoys coloring to unwind. Sentence 3: She spends hours coloring swirls and pictures. Sentence 4: She does a good job staying in the lines. Sentence 5: Catherine is happy with the picture she colored. Choices: a. Coloring Book. b. Joe Loses a Library Book.

a