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: I managed to set to the subway train late. Sentence 2: The bus driver told me that there's no seats available. Sentence 3: Therefore, I had to step out. Sentence 4: The next shuttle had a lot of available seats. Sentence 5: Unfortunately, I was an hour late to class. Choices: a. Uncomfortable Silence. b. No more Seats Available.

b