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'.

Example Input: Sentence 1: Mark is an athlete that competes in Track and Field. Sentence 2: He has a practice session where he practices his jumps. Sentence 3: He was running late and decided to practice without warming up. Sentence 4: When he jumped the first hurdle, he got a cramp. Sentence 5: He decided to never train without warming up. Choices: a. Elliptical. b. Mistake.
Example Output: b

Example Input: Sentence 1: The United States entered World War II. Sentence 2: Industry began to grow. Sentence 3: People went off to war. Sentence 4: The war went for a while. Sentence 5: The Allied forces won. Choices: a. Rodeo. b. World Event.
Example Output: b

Example Input: Sentence 1: John was always a slow eater. Sentence 2: He only had half hour lunches. Sentence 3: John tried to eat faster but it didn't work. Sentence 4: He decided to just eat smaller portions instead. Sentence 5: It helped keep him on schedule. Choices: a. The Drum Major. b. Slow Eater.
Example Output:
b