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: Chance. Sentence 1: Kian wanted to be a male model. Sentence 2: A talent agent came to his town and arranged a contest. Sentence 3: Kian was nervous, but he entered the competition. Sentence 4: He did his very best! Choices: a. Even though he didn't win, Kian was glad he had tried. b. It was a smart choice and Sam was proud of himself.

Ex Output:
b

Ex Input:
Title: The Test That Switched. Sentence 1: Samantha had a very important test coming up. Sentence 2: She prepared all weekend for the test. Sentence 3: She felt very confident she knew everything on the test. Sentence 4: She took the night off from preparing for the test. Choices: a. She went to school and the test was nothing she studied about. b. I prefer eggs that are fried.

Ex Output:
b

Ex Input:
Title: Bark. Sentence 1: The dog barked all night. Sentence 2: The neighbor complained. Sentence 3: The police talked to the owners. Sentence 4: The owners agreed to keep the dog indoors. Choices: a. The dog did not bark while it was inside. b. Soon her grades had improved drastically!

Ex Output:
b