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: Two mechanical Turk workers were walking down a sidewalk. Sentence 2: The one on the left tapped the shoulder of the one on the right. Sentence 3: He wanted to know if his peer had heard about Amazon's improvements. Sentence 4: His peer said he could count them on his hands. Sentence 5: He then pondered how one could Turk without any hands at all. Choices: a. Trip to Japan. b. Platform Improvements.

b