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: Power cut. Sentence 1: It was an incredibly hot summer's day. Sentence 2: The Smith family was sat at home enjoying the air conditioning. Sentence 3: Suddenly the power cut out and the air conditioning shut off! Sentence 4: The house got so hot the whole family had to go to a friend's house. Choices: a. Zach was so proud of himself! b. Luckily when they returned the power was on and it was cool again.

Ex Output:
a

Ex Input:
Title: First impression. Sentence 1: Laura always listened to her first impression. Sentence 2: And when she met Ken, she didn't like him. Sentence 3: So she always avoided him without any other cause. Sentence 4: Until she got to talk to him one day. Choices: a. He was so nice, she had to change her mind. b. Jacob didn't make it because he couldn't pass the written test.

Ex Output:
b

Ex Input:
Title: The Root of the Problem. Sentence 1: I sighed with frustration when Ann cancelled yet another appointment. Sentence 2: I knew our coaching sessions were good for her when she chose to come. Sentence 3: Listening to her stammered excuse, I got a sudden flash of insight. Sentence 4: Acting on instinct, I asked her why she felt undeserving of success. Choices: a. As silence gave way to tears, I knew we'd finally exposed her barrier. b. Seeing that they had hot food, the police officer let them go.

Ex Output:
b