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: The man filled out his address. Sentence 2: The company sold the address. Sentence 3: The advertiser sent an advertisement to the address. Sentence 4: The man bought something. Sentence 5: The advertiser marked his name as a potential customer. Choices: a. Address. b. Bobby's Mess.

a