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: Ben got a bonus from his company. Sentence 2: He didn't know what to do with it. Sentence 3: He had no kids or wife to spend it on. Sentence 4: So he bet all of his bonus into horse racing. Sentence 5: He lost all of his bonus money on horse racing. Choices: a. Harry's road trip. b. Ben's gamble.

b