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 really loved CrossFit he trained everyday. Sentence 2: Soon his friends wanted to train with him and it was fun. Sentence 3: John found himself wanting to train and decided to get certified. Sentence 4: A course was offered over the weekend and he took the test and passed. Sentence 5: He is very excited to start training other people and improving. Choices: a. CrossFit. b. Gross aloe.

a