Instructions: 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: Ken was drunk at a bar. Sentence 2: There was a mechanical bull. Sentence 3: He thought it would be fun to ride. Sentence 4: He got on it and stayed longer than anyone expected. Sentence 5: Ken had a lot of fun and tried it again. Choices: a. Electric Bull Riding. b. Hilary.
Output:
a