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: We once had a pet parakeet. Sentence 2: We bought him from a flea market without high expectations. Sentence 3: After only a week, he seemed to have a nervous breakdown. Sentence 4: My sister tried to wake him, but instead he fell over dead. Sentence 5: We decided to bury him in the back yard. Choices: a. Kiwi. b. Caribbean.

a