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: It was the first cold day of the winter. Sentence 2: Jane wore her glasses on her walk to school. Sentence 3: When she entered the building they fogged over. Sentence 4: She had no idea that would happen. Sentence 5: She laughed as she cleaned the fog off with her shirt. Choices: a. New Teacher. b. Foggy.

b