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: Last night I tried cramming for a test. Sentence 2: It was midnight and I was try to get work done. Sentence 3: Unfortunately my eyes started closing. Sentence 4: I was exhausted. Sentence 5: When i woke up I was very unprepared. Choices: a. Total exhaustion. b. Coconut yogurt.
Output:
a