Instructions: 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: Architecture fascinated Bill. Sentence 2: Architecture was one of Bill's favorite topics. Sentence 3: He would stare at pictures of interesting architecture everyday. Sentence 4: He even tried to make his own designs. Sentence 5: They were so good he was actually able to make some of them. Choices: a. Becky's whereabouts. b. Architect.
Output:
b