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: Tom was driving his car and had a flat tire. Sentence 2: He pulled his car over to the side of the road. Sentence 3: He got the spare tire out and started to change the tire. Sentence 4: A stranger stopped to help him. Sentence 5: Together they put the spare tire on the car. Choices: a. Tiffany. b. Car.

b