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: Charles was driving his limousine at work last week. Sentence 2: He was given a ride from his boss that was across town. Sentence 3: After arriving at the house an hour later he tried to call the guest. Sentence 4: The guest told Charles that the trip was actually not until tomorrow. Sentence 5: Charles had to drive all the way back into town empty handed. Choices: a. Hong Kong. b. Charles the Driver.

b