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: Jamie built doll houses for a living. Sentence 2: As he was self-conscious, he told people he was an architect. Sentence 3: When an acquaintance asked him for a house, he drew the plans. Sentence 4: He built the house and showed it with pride. Sentence 5: His acquaintance was speechless as he was facing a doll house. Choices: a. The Waterfall. b. House building.

b