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.

Example Input: Title: donation. Sentence 1: The man asked for donations. Sentence 2: Everybody ignored him. Sentence 3: The man told his friend. Sentence 4: His friend suggested a strategy. Choices: a. In the end, I decided to try the new brand because of the discount. b. The man got donations with the new strategy.
Example Output: a

Example Input: Title: AA meeting. Sentence 1: Alan stopped going to his AA meetings all of a sudden. Sentence 2: He decided he was better and didn't need help anymore. Sentence 3: As he was among people who didn't drink it helped for a bit. Sentence 4: But he realized as time went by that he missed the company. Choices: a. That is when he heard the baby yell, "daddy!" b. So he went back to help others as he was feeling stronger himself.
Example Output: a

Example Input: Title: Messing Up. Sentence 1: Sam had a nice girlfriend. Sentence 2: He felt that he was always messing up. Sentence 3: He tried to buy her flowers to make up for it. Sentence 4: Unfortunately he got some she was allergic to. Choices: a. She thought it was an insult and broke up with him. b. I have my first karate class on Thursday night.
Example Output:
b