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 had been gaining a lot of weight. Sentence 2: Eventually his normal belts didn't fit anymore. Sentence 3: Tom was embarrassed but knew what he had to do. Sentence 4: Working out and losing weight was too hard. Sentence 5: Tom bought new belts instead. Choices: a. Dinner. b. New Belt.

b