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: 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.

a