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: One of my neighbors lost a cat. Sentence 2: She posted a note on my door about it. Sentence 3: So, I joined the hunt. Sentence 4: Luckily, we were able to find the cat. Sentence 5: That good fortune really made my friend's day! Choices: a. Lost Cat. b. Janitor.

a