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: The man bought some popcorn. Sentence 2: He got some stuck in his teeth. Sentence 3: His gum became swollen. Sentence 4: He flossed really well. Sentence 5: The popcorn came out. Choices: a. popcorn. b. Child Psychologist.

a