You will be given a definition of a task first, then some input of the task.
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'.

Sentence 1: Kate found a chair in a crowded club. Sentence 2: She was surprised no one was sitting on it. Sentence 3: Her friends tried to stop her from sitting on the gum on the chair. Sentence 4: But she sat down before realizing what they were saying. Sentence 5: Her dress was ruined and the damage was already done. Choices: a. Biology test. b. Too Late To Stop.
Output:
b