Instructions: 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: Ella was studying for a test. Sentence 2: Her brother was making a lot of noise. Sentence 3: Ella couldn't concentrate on her studying. Sentence 4: Ella threw a book at her brother. Sentence 5: She got in trouble for throwing the book. Choices: a. Trying to Study. b. Found Dog.
Output:
a