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: I got a car charger to charge my phone. Sentence 2: However, I dropped it when I tried to plug it up. Sentence 3: It fell out of the car and down a hill. Sentence 4: I quickly chased after it. Sentence 5: I finally got the car charger before it rolled into a small pond. Choices: a. Geography. b. The car charger.

b