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: Tom wanted to go swimming. Sentence 2: There was a river near by. Sentence 3: Tom checked the news. Sentence 4: They said that the river was too polluted to swim in. Sentence 5: Tom decided against it. Choices: a. Pictures. b. Dirty River Water.

Ex Output:
b

Ex Input:
Sentence 1: Kia won $550 in the state lottery, and went downtown to claim it. Sentence 2: On her way in, she saw numerous homeless men and women on the street. Sentence 3: Kia felt very bad for them. Sentence 4: When she had her winnings, she distributed $20 to each one. Sentence 5: Everyone thanked her very warmly! Choices: a. Winner. b. Quiet Firecracker.

Ex Output:
a

Ex Input:
Sentence 1: My dad ran into a famous baseball player one day. Sentence 2: My father wanted to get an autograph from him. Sentence 3: He asked the baseball player for his autograph. Sentence 4: The baseball player rudely told my father off. Sentence 5: My father now badmouths this ballplayer to anyone he meets. Choices: a. The Baseball Player. b. Plastic bags.

Ex Output:
a