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: Yancy was tilling his corn crops one summer morning. Sentence 2: A salesman drove up selling seed. Sentence 3: Yancy bought some and planted what he thought was corn. Sentence 4: A few weeks later, he noticed it was watermelon. Sentence 5: Yancy cursed the salesmen for the wrong seed. Choices: a. Watermelon. b. Nostalgia.

a