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: John had a big final coming up. Sentence 2: He had been studying for weeks. Sentence 3: The test was very important to his grade. Sentence 4: He was very committed to doing well. Sentence 5: He made sure to put the extra effort in. Choices: a. Head Butt. b. The big test.
Output:
b