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: Cody really liked a girl named Cassie when he was in 3rd grade. Sentence 2: One day at recess he was racing with his friends near the school. Sentence 3: As he was running he saw cassie out of the corner of his eye. Sentence 4: Next second he knew he was lying on the ground from colliding with her. Sentence 5: He thought it was awesome because now they could laugh about it. Choices: a. Recess. b. The Mattress.

a