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: Shirley loved to wear sweatshirts. Sentence 2: She loved how they looked on her. Sentence 3: Everytime she went to a store, Shirley purchased a store. Sentence 4: One day, Shirley traveled to a big store. Sentence 5: She happily purchased many sweaters. Choices: a. Cat. b. Sweatshirt.

b