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: Tom was desperate for money. Sentence 2: He had a bit left and decided to gamble. Sentence 3: He went to a casino and put all his money on black. Sentence 4: Tom got lucky and actually won. Sentence 5: It wasn't enough to help him out, though. Choices: a. Winning Big. b. Future Purchases.
Example Output: a

Example Input: Sentence 1: Howard was getting bullied. Sentence 2: He did not know what to do. Sentence 3: His friend ended up standing up to the bully. Sentence 4: His friend beat the bully up. Sentence 5: The bully did not bother howard anymore. Choices: a. Bullies. b. Sister.
Example Output: a

Example Input: Sentence 1: Sam was at his friend's wedding rehearsal. Sentence 2: He started drinking too early. Sentence 3: When his toast came up he was already too drunk. Sentence 4: Sam made a lot of rude comments. Sentence 5: His friend asked him not to attend the wedding anymore. Choices: a. Wedding Rehearsal. b. Jeff loses his shirt.
Example Output:
a