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: Mia was playing baseball. Sentence 2: It was gym class. Sentence 3: She took a swing at the ball, Sentence 4: She didn't realize she hit the ball at the teacher's head by accident. Sentence 5: Mia was so embarrassed and apologized. Choices: a. Dinner. b. Bad ball.

b