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'.

Example Input: Sentence 1: The man saw a friend at a coffee shop. Sentence 2: He challenged his friend to a game of chess. Sentence 3: His friend agreed. Sentence 4: His friend offered a bet. Sentence 5: They played a game for money. Choices: a. Chess. b. Peter's peppers.
Example Output: a

Example Input: Sentence 1: Koa wanted to be a dancer. Sentence 2: He asked his mom to take ballet lessons. Sentence 3: She said maybe that was better suited to females, but she compromised. Sentence 4: She offered to let him take modern dance classes. Sentence 5: Koa decided that was better than nothing, and he agreed. Choices: a. Tyler loses a leg. b. Ballet.
Example Output: b

Example Input: Sentence 1: After a night at the bar, my friend wanted to drive home. Sentence 2: I insisted we were too drunk. Sentence 3: He said I was being over cautious. Sentence 4: I decided to walk home on my own. Sentence 5: He got pulled over. Choices: a. New in town. b. The DUI.
Example Output:
b