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 boy got a piece of pizza. Sentence 2: He took it to his friends. Sentence 3: He ate it in front of his friends. Sentence 4: His friends all wanted one. Sentence 5: The friends went to get pizza. Choices: a. Babysitter. b. Pizza.

b