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'.

Ex Input:
Sentence 1: Renee wanted to lose weight and get in better shape. Sentence 2: She found a program for free that started slow. Sentence 3: She started walking every day and jogging for a few minutes. Sentence 4: Soon she was only jogging every day and not walking. Sentence 5: After just three months, Renee was able to run her first 5K. Choices: a. Couch to 5K. b. Mixed Messages.

Ex Output:
a

Ex Input:
Sentence 1: Karen lives in a small apartment with her cat. Sentence 2: She has owned this cat for about eight years. Sentence 3: She loves her cat a lot and takes good care of her. Sentence 4: Unfortunately Karen has to put the cat to sleep due to illness. Sentence 5: She is having a hard time coping with this fact. Choices: a. Daddy's Little Girl. b. Karen and Her Cat.

Ex Output:
b

Ex Input:
Sentence 1: Bert's mom told him he had to take a bath. Sentence 2: Bert didn't want to. Sentence 3: Bert's mom told him he could use bubbles. Sentence 4: She even gave him a little rubber duck. Sentence 5: Bert felt a little better about having to take a bath. Choices: a. Bath Time. b. Adam's Dance Club.

Ex Output:
a