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: Consider 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..

Output: b

Input: Consider Input: Sentence 1: Robin is an actor. Sentence 2: He has been acting for years. Sentence 3: One evening while filming a movie he snaps. Sentence 4: He walks off the set. Sentence 5: Robin quit acting that day. Choices: a. Robin calls it quits. b. Yellow Hat.

Output: a

Input: Consider Input: Sentence 1: One day the Zicker family went on vacation to New York. Sentence 2: First they went to the Empire State Building. Sentence 3: Then they walked around downtown. Sentence 4: Then they went to Central Park. Sentence 5: Finally they went to the Bronx Zoo. Choices: a. New York Vacation. b. Detroit Vacation.
Output: a