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: All of the fish in Tracy's fishbowl had died. Sentence 2: She decided to go to the petstore and buy more fish. Sentence 3: While there, she had a hard time choosing which fish to get. Sentence 4: She decided to get two new goldfish. Sentence 5: She took them home and they were happy in their new home. Choices: a. Buying a new fish. b. The Doctor.

a