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: Nate and Zach argued over who was the fastest on their bike. Sentence 2: Zach challenged Nate to a bike race. Sentence 3: Nate accepted the challenge and went home to get his bike. Sentence 4: Zach also got his bike and they met back up. Sentence 5: Nate and Zach raced and it resulted in a tie. Choices: a. Bike Race. b. Another Beach Day.
Output:
a