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: Walden worked every day from nine to five sitting at a desk. Sentence 2: He drank the same coffee and said the same things to his coworkers. Sentence 3: One day he didn't come to work when he never missed before. Sentence 4: His coworkers were worried and went to his home to check on him. Sentence 5: Walden was gone with a note left that said he went to Germany. Choices: a. The End. b. Menal the hiker.

a