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: Jill had been having a problem with mice in her home. Sentence 2: She went to the animal shelter and adopted a cat. Sentence 3: Jill's cat took care of the mice. Sentence 4: Jill no longer had a mouse problem. Sentence 5: She loved having her cat around. Choices: a. Lost cat. b. Mouse Problem.

b