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: The Smith family opened up a diner. Sentence 2: Unfortunately they didn't have much business experience. Sentence 3: They made good food but couldn't turn a profit. Sentence 4: The restaurant struggled for a few months. Sentence 5: Eventually they had to shut down. Choices: a. Sister Wolf. b. New Restaurant.

Ex Output:
b

Ex Input:
Sentence 1: Clara had always flown in coach. Sentence 2: One day, an airline bumped her to first class! Sentence 3: She was so amazed that she wasn't sure what to do with herself. Sentence 4: She got free drinks and food and a hot towel. Sentence 5: Clara decided she could never go back to coach. Choices: a. Bird. b. First Class.

Ex Output:
b

Ex Input:
Sentence 1: Melvin wanted to take a helicopter ride while on vacation. Sentence 2: His grandson wanted to go with him. Sentence 3: They bought tickets and shortly took off. Sentence 4: They went around the lake and saw the waterfall. Sentence 5: They both had a great time that they would remember forever. Choices: a. Helicopter ride. b. In church.

Ex Output:
a