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: Nick had an amazing smile. Sentence 2: But when his wisdom tooth grew weird, it pushed his teeth askew. Sentence 3: He asked the dentist if he could do anything about it. Sentence 4: The dentist removed the wisdom tooth but couldn't do more. Sentence 5: Nick had to accept his new smile. Choices: a. Shy girl. b. Smile.

b