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: John has a physics test. Sentence 2: He has not studied. Sentence 3: He pulled an allnighter. Sentence 4: When he got to call, he was very anxious. Sentence 5: John was happy when his teacher postponed the test. Choices: a. Lunch. b. Physics test.

b