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 got a new dog. Sentence 2: It was not housebroken. Sentence 3: Tom often found his apartment messed up. Sentence 4: He tried hard to train him to no avail. Sentence 5: Tom wound up getting rid of it. Choices: a. Bad Dog. b. Inflatable Bed.

a