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: Ethan's friends challenged him to drink 2 liters of cola in an hour. Sentence 2: They pooled their funds and offered him twenty dollars. Sentence 3: Ethan accepted the challenge. Sentence 4: He struggled, but he managed to drink all the cola on time! Sentence 5: However, that night Ethan had a terrible stomach ache! Choices: a. Challenge. b. Slow in understanding.
Example Output: a

Example Input: Sentence 1: Barry was selected to host a basketball camp for young children. Sentence 2: Barry was excited to host the camp as he loved working with children. Sentence 3: Barry taught the kids the mechanics of shooting, and the game history. Sentence 4: Barry also taught the kids sportsmanship, and being a team player. Sentence 5: Barry enjoyed being the host of this years basketball camp. Choices: a. Basketball Camp. b. Grumpy Manager.
Example Output: a

Example Input: Sentence 1: Podnle Oddnle was a doctor. Sentence 2: He performed a successful heart bypass. Sentence 3: This bypass saved a young girl's life. Sentence 4: Her family thanked the doctor with a check. Sentence 5: The check was for so much, Podnle Oddnle quit being a doctor. Choices: a. Podle. b. Fly.
Example Output:
a