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: Omar was on vacation. Sentence 2: And he saw an artisan coffee shop. Sentence 3: He thought about buying coffee there. Sentence 4: But he decided it was too expensive. Sentence 5: When Omar was back at home, though, all he thought about was coffee. Choices: a. Expensive Coffee. b. Ride.
Example Output: a

Example Input: Sentence 1: Tom was a UFC fighter. Sentence 2: He had just been in a close match. Sentence 3: They had to have the judges pick a winner. Sentence 4: Everyone disagreed with their choice. Sentence 5: Tom felt cheated and demanded a rematch. Choices: a. Judge's Decision. b. Comb.
Example Output: a

Example Input: Sentence 1: The boy caught a carp. Sentence 2: He took it home. Sentence 3: He asked his mom to cook it. Sentence 4: His mom refused. Sentence 5: The boy cooked it himself. Choices: a. carp. b. Jack's Test.
Example Output:
a