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: Chris was in a black market in Mongolia. Sentence 2: He saw a sweater that looked very warm and fashionable. Sentence 3: He tried to barter with the shopkeeper. Sentence 4: The shopkeeper said 30 dollars and wouldn't go any lower. Sentence 5: Chris realized he was not any good at bartering. Choices: a. Barter. b. Hard day.

a