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: It was a sweltering summer day. Sentence 2: Samuel was doing his daily run in the park. Sentence 3: By the time he got home, his shirt was soaked in sweat. Sentence 4: He went straight to the kitchen and got a glass of water. Sentence 5: It was incredibly refreshing. Choices: a. Hot Day. b. Coffee Seller.

a