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: I love having pets. Sentence 2: When i was in grade school, i had hamster. Sentence 3: But they all died,so i decided to replace it with guinea pig. Sentence 4: But they also died so i decided to replace it with a puppy. Sentence 5: And now my dog is now more than two years old and healthy. Choices: a. The Vacation. b. pets.

b