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: Adam lost his dog last week. Sentence 2: He posted posters all over his neighborhood hoping someone found it. Sentence 3: A call came in a month later. Sentence 4: Someone found his dog and put him in the pound! Sentence 5: Adam rushed to the pound to reunite with his dear friend. Choices: a. Stressful Job. b. Lost dog.

b