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: Billy got a goldfish. Sentence 2: He bought a tank and food. Sentence 3: Billy put the fish in the tank. Sentence 4: But he forgot to feed it. Sentence 5: Billy's fish died. Choices: a. Goldfish Lesson. b. Lucky Linda.

a