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'.

Ex Input:
Sentence 1: Sarah didn't have a lot of friends growing up. Sentence 2: When she got old, she was suddenly very pretty. Sentence 3: She married a famous actress. Sentence 4: Suddenly, everyone wanted to be her friend. Sentence 5: But Sarah knew who her true friends were. Choices: a. Real Friends. b. Dirty Diaper.

Ex Output:
a

Ex Input:
Sentence 1: Joseph loved to camp. Sentence 2: One day, he went out on a camping trip into the woods. Sentence 3: He set up camp and left all his food in his tent to go for a hike. Sentence 4: He returned from the hike and discovered that all his food was gone. Sentence 5: He had to end his camping trip early so he could get something to eat. Choices: a. Joseph's Campout. b. Failed.

Ex Output:
a

Ex Input:
Sentence 1: Bob was trying to fall asleep when the phone rang. Sentence 2: It was the FedEx man calling from his apartment lobby. Sentence 3: He told him he had a package for him. Sentence 4: Bob tried to control his anger and not yell. Sentence 5: He asked as calmly as possible why FedEx didn't just bring it to him. Choices: a. Lobby. b. Chameleon.

Ex Output:
a