In this task, you're given the title of a five-sentence story, the first four sentences, and two options for the fifth sentence as a and b. Your job is to pick the sentence option that does not connect with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes less sense.

Ex Input:
Title: Painting the Room. Sentence 1: Mary wanted to paint her living room. Sentence 2: She went to the store and bought a gallon of paint. Sentence 3: Mary brought the paint home and set it in the living room. Sentence 4: She laughed as she realized she forgot the paint brushes. Choices: a. The branches ripped it apart. b. Mary went back to the store to buy the paint brushes.

Ex Output:
a

Ex Input:
Title: Hockey Fan. Sentence 1: Sam was a hockey fan who loved the Pittsburgh Penguins. Sentence 2: He had season tickets and attended every home game. Sentence 3: Once, he entered a contest at a game to win a mystery prize. Sentence 4: To enter, he had to write a story about his favorite player. Choices: a. A week later we got our grades and I scored an A on the math final. b. Sam won, and the prize was dinner with his favorite player!

Ex Output:
a

Ex Input:
Title: The one that got away. Sentence 1: Ben always felt he could tell when his clients were guilty or not. Sentence 2: His latest client gave him the impression of innocent. Sentence 3: Ben showed the prosecution's case was full of holes. Sentence 4: When the jury delivered a not guilty verdict, Ben was relieved. Choices: a. Luckily by the time she made it to her boyfriend she was happy again. b. One week after the trial, his client confessed to really being guilty.

Ex Output:
a