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: Justin was taking a trip. Sentence 2: His car started to make a loud noise. Sentence 3: He decided to pull over. Sentence 4: He popped the hood and his engine was blown. Sentence 5: He called for help and waited to get picked up. Choices: a. Halloween on the street. b. Justin breaks down.

Ex Output:
b

Ex Input:
Sentence 1: I once dreamed of having my own guitar. Sentence 2: But before buying my own guitar i have to learn how to play it. Sentence 3: I ask my friend to teach me how to play it but i still can't. Sentence 4: I tried to ask my brother to teach but still i can't. Sentence 5: Until i decided to quit and find another hobby. Choices: a. guitar. b. Tough Love.

Ex Output:
a

Ex Input:
Sentence 1: Tom was walking to work. Sentence 2: He was holding his umbrella. Sentence 3: The wind started to pick up. Sentence 4: A strong gust ripped the umbrella out of his hand. Sentence 5: Tom wasn't able to get it back. Choices: a. Loud at the Library. b. Windy Day.

Ex Output:
b