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: Tony had just moved into a new home. Sentence 2: He had dozens of boxes to unpack. Sentence 3: He invited his friends over to help him. Sentence 4: The work was done quickly. Sentence 5: Tony ordered pizza for his friends in appreciation. Choices: a. Arm Wrestling. b. Unpacking Boxes.

b