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: Tim was always a little chubby. Sentence 2: Eventually he got tired of the way he looked. Sentence 3: He asked his friends to help him get in shape. Sentence 4: They trained together every day. Sentence 5: Tim is now in great shape and is a body builder. Choices: a. Tim gets in Shape. b. Going too fast.
Output:
a