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: John had been running for an hour when he started feeling thirsty. Sentence 2: He realized his water bottle was at home after searching his pouch. Sentence 3: John decided to turn around and run back home to get his bottle. Sentence 4: When he was half way there, it started raining. Sentence 5: John took a break while drinking raindrops from the sky. Choices: a. The runner. b. Igor's day off.

a