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: Kirby tried to cut down a tree with a hand ax. Sentence 2: When that didn't work, he decided to try a hand saw. Sentence 3: When his hand saw broke, he tried a chainsaw. Sentence 4: The chainsaw cut the tree down, but it also cut Kirby's leg. Sentence 5: Kirby decided to get an artificial tree next Christmas. Choices: a. Night Work. b. Tree Wars.

b