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: Bee Allergy. Sentence 1: Tony was playing outside with his friends. Sentence 2: They discovered a large bee's nest. Sentence 3: Tony poked it with a stick. Sentence 4: As the bees swarmed out, many stung Tony. Choices: a. Tony discovered he is allergic to bees. b. Hannah breaks up with Nate because he didn't propose.

Ex Output:
b

Ex Input:
Title: Mary never cooks. Sentence 1: Mary never cooks. Sentence 2: She eats fast food every day. Sentence 3: Last week she visited the doctor. Sentence 4: The doctor said she needs to eat healthy food. Choices: a. He was ready for Halloween! b. Mary decided to start cooking at home.

Ex Output:
a

Ex Input:
Title: Nelly is scared. Sentence 1: Nelly is visiting her friend. Sentence 2: Her friend has a really big dog. Sentence 3: Nelly is afraid to go anywhere near it. Sentence 4: Nelly avoids the dog her whole time there. Choices: a. Luckily his daughter works at the RMV and did the paperwork for him. b. Nelly is afraid of her friends dog.

Ex Output:
a