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: Emma joined track in third grade. Sentence 2: Her parents and sister came to her first meet. Sentence 3: They cheered Emma on as the race started. Sentence 4: They watched as the teams did a loop around the track. Sentence 5: They were proud when Emma ended up coming in third place. Choices: a. Airplanes. b. Emma's track race.

b