Definition: 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'.
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.

a