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: For breakfast I decided to have some cereal. Sentence 2: I poured some milk into the cereal. Sentence 3: When I began eating I knew something didn't taste right. Sentence 4: I still ate until my stomach started hurting really bad. Sentence 5: Turns out the milk was expired. Choices: a. Expired. b. Bad playground.

a