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 air ducts needed cleaning. Sentence 2: I called the air duct cleaning service. Sentence 3: They arrived promptly at noon. Sentence 4: The cleaners cleaned all of my air ducts. Sentence 5: The air in my house is now cleaner. Choices: a. Fresh Air In My House. b. Heal the Healer.

a