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: Bill's buddy Marty invited him to a sleep over. Sentence 2: Bill and Marty stayed up all night watching horror movies and talking. Sentence 3: They finally fell asleep around 4 in the morning. Sentence 4: The boys slept until noon. Sentence 5: The next day Bill went home and thought about how fun it all was. Choices: a. Tomato. b. Boys Sleepover.

Ex Output:
b

Ex Input:
Sentence 1: Roxy used to be a very social person. Sentence 2: But the older she got she became less sociable. Sentence 3: She began to withdraw from friends and they stopped calling her. Sentence 4: She then began withdrawing from her family that didn't live with her. Sentence 5: Now Roxy only talks to her husband and kids and is mostly a loner. Choices: a. Slade's Fur Coat. b. Roxy the loner.

Ex Output:
b

Ex Input:
Sentence 1: It was the first day of school. Sentence 2: Rachel was very nervous. Sentence 3: She had five new classes. Sentence 4: Despite being new, she had a good day. Sentence 5: She realized she would like this new school. Choices: a. Birthday Pie. b. School.

Ex Output:
b