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: Carl joined a gym. Sentence 2: He began to attend the gym everyday. Sentence 3: Carl would walk on the treadmill for a half hour a day. Sentence 4: He decided to start weight training. Sentence 5: Carl asked a friend for help with the weight training. Choices: a. Carl Workout. b. Angry Bird.
Output:
a