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: Jake noticed a dog in his neighborhood. Sentence 2: He noticed that it had a tag on it. Sentence 3: He took it in and called the number on the tag. Sentence 4: The owners were relieved to know their dog was safe. Sentence 5: Jake gave him back to them. Choices: a. Mack. b. Lost Dog.

b