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: Jan and Julie were sisters. Sentence 2: The sisters were complete opposites. Sentence 3: Jan loved art and Julie loved numbers. Sentence 4: One day, the sisters decided to open a clothing store. Sentence 5: The sisters combined their talents to create a successful business. Choices: a. Sisters. b. The poisonous bush.
Example Output: a

Example Input: Sentence 1: Michael wanted to visit a candy store. Sentence 2: He hasn't been to a candy store since he was a kid. Sentence 3: He spent time looking at all the different candies the store offered. Sentence 4: He ended up spending fifty dollars all on candy. Sentence 5: By the end of the week, Michael was already sick of candy. Choices: a. Tooth Pain. b. Candy Store.
Example Output: b

Example Input: Sentence 1: Jason went to the grocery store with a coupon for toilet paper. Sentence 2: He looked around the whole store but couldn't find his brand. Sentence 3: He asked an employee who even went in the back. Sentence 4: But they were out of that particular brand. Sentence 5: Jason had to buy a new brand and trust it would be good enough. Choices: a. Shopping for toilet paper. b. Spelling queen.
Example Output:
a