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: Michael wanted to change his last name. Sentence 2: He didn't feel any ties to it. Sentence 3: He began looking at surnames to find one he likes. Sentence 4: After a few hours, he narrowed it down. Sentence 5: He is excited to feel like he's his own person. Choices: a. Ben's Pond. b. Surname.

b