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: Bailey had been walking all day. Sentence 2: She was determined to catch some Pokemon. Sentence 3: She had about a dozen already but wanted more. Sentence 4: She collected a few before going back home. Sentence 5: Her collection was growing quickly! Choices: a. Pokemon. b. The Big One.

a