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: My wife and I are fairly wealthy. Sentence 2: The local zoo contacted us seeking a contribution. Sentence 3: We gave what we thought was a sizable sum. Sentence 4: We later learned they put our name on a bench. Sentence 5: We couldn't imagine how much other donors must have given. Choices: a. Bench Donation. b. Buying a Table.

a