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: Cole was taking a martial arts class. Sentence 2: He attended the class every week. Sentence 3: Cole was very attentive in his class. Sentence 4: The instructor said he was one of the best students. Sentence 5: Cole quickly moved up in ranks. Choices: a. Power Outage. b. The Martial Artist.

b