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: Martha goes to the skating rink every Wednesday. Sentence 2: It's the same night the roller derby team practices. Sentence 3: Martha tries to imitate the way they skate. Sentence 4: Next time they hold tryouts, Martha is going to go. Sentence 5: Until then, she's going to practice. Choices: a. Chasing a Rabbit. b. Marth at the Skating Rink.

b