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: The house was lined with new houses. Sentence 2: But there were no trees! Sentence 3: The builder came through and planted one in each front yard. Sentence 4: The houses looked much better. Sentence 5: When the trees grew, it all looked very nice. Choices: a. The Trees. b. Book Sale.

a