Instructions: 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: Kate bought a new bike. Sentence 2: She went bike riding. Sentence 3: Kate went down a huge hill. Sentence 4: Kate lost control of her bike. Sentence 5: She fell off the bike damaging it in the process. Choices: a. New Bike. b. Unplugged.
Output:
a