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: Willie thought he was a pretty ethical man. Sentence 2: He went to work as a politician's assistant. Sentence 3: The politician did some bad stuff. Sentence 4: Little by little, Willie had to cover it up. Sentence 5: Willie realized he wasn't a good man anymore. Choices: a. Thanks, Friend. b. Politics.

b