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: Family Reunion. Sentence 1: The Nelson family held a reunion. Sentence 2: They all wore name tags handed out at the start. Sentence 3: They ate a large barbecue meal. Sentence 4: While eating, they got into a large fight about politics. Choices: a. That was the last Nelson family reunion. b. He grimaced in pain as he reached the peak.

Ex Output:
b

Ex Input:
Title: Broken Air Conditioner. Sentence 1: It was a really hot summer. Sentence 2: Tom's air conditioning broke. Sentence 3: It would be days to get it fixed. Sentence 4: Tom couldn't stand the heat. Choices: a. Tom was thankful and got full. b. He decided to stay in a hotel instead.

Ex Output:
a

Ex Input:
Title: Scary Movie Night. Sentence 1: One night Nina and her friends decided to watch scary movies. Sentence 2: First they watched Paranormal Activity. Sentence 3: Then they watched Carrie. Sentence 4: Finally they watched The Exorcist. Choices: a. Fluffy ended up being a nice bunny. b. No one could sleep that night!

Ex Output:
a