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'.

Example Input: Sentence 1: Sam realized he had just sat on a bench with wet paint. Sentence 2: His expensive suit had a stripe on it, minutes before the big meeting! Sentence 3: Sam thought for a moment, then acted. Sentence 4: He rolled around on the bench, creating more stripes. Sentence 5: The executives were impressed with his pinstripe suit. Choices: a. Missed Calls. b. Stripes.
Example Output: b

Example Input: Sentence 1: Chuck was offered a free month of Netflix. Sentence 2: Chuck tried it out as long as it was for free. Sentence 3: He binged watched tons of television shows and movies! Sentence 4: But he was also very unproductive for the entire month. Sentence 5: Chuck decided not to sign up for Netflix. Choices: a. That's Not How This Works. b. Binge Watching.
Example Output: b

Example Input: Sentence 1: Dave was failing in physics. Sentence 2: This wasn't good because Dave wanted to be an engineer. Sentence 3: Dave got a campus tutor and worked very hard. Sentence 4: Dave studied day and night. Sentence 5: Dave aced the exam and passed the physics course! Choices: a. Big Buttons. b. Physics.
Example Output:
b