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: Nolan had always wanted to try rock climbing. Sentence 2: He had hired an instructor to teach him the correct way. Sentence 3: Soon Nolan felt comfortable to head to the mountains. Sentence 4: He checked all of his gear and started the climb. Sentence 5: Nolan reached the peak and felt very accomplished. Choices: a. Bad Haircut. b. Mountain climbing..

b