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: Peter had a very odd sense of humor. Sentence 2: He would go to great lengths for a laugh. Sentence 3: One day, he was gardening with some friends. Sentence 4: One of them mentioned the Peter Piper tongue twister. Sentence 5: Peter was so amused by this he legally changed his last name to Piper. Choices: a. Zoo Keeper. b. Peter Piper Picked Peppers.

b