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: One day some kids at recess decided to play hopscotch. Sentence 2: One kid fell and sprained his ankle. Sentence 3: Everyone laughed because hopscotch isn't very violent. Sentence 4: The kid made some new friends over it. Sentence 5: Everyone brought it up around him from then on. Choices: a. Hopscotch. b. Blackjack.

a