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: Better Cardio. Sentence 1: Tom constantly ran out of breath. Sentence 2: He decided to fix it by joining a marathon. Sentence 3: Tom trained hard for it every day. Sentence 4: He was able to finish it when the day came. Choices: a. Tom's cardio improved a great deal. b. His dog was licking his lips and chewing pieces of food.

Ex Output:
b

Ex Input:
Title: I fell in love. Sentence 1: I met this girl online. Sentence 2: I went crazy for her. Sentence 3: I wanted to fly out to meet her and be with her. Sentence 4: So i bought a plane ticket to go see her. Choices: a. That was really frustrating. b. I never went back home.

Ex Output:
a

Ex Input:
Title: Roast beef. Sentence 1: Allie went on a date. Sentence 2: They went to a roast beef restaurant. Sentence 3: She didn't have a good experience. Sentence 4: Her beef was not cooked enough. Choices: a. I was glad to get rid of the condo. b. She had to send it back.

Ex Output:
a