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: Unwanted Activity. Sentence 1: The police officer parked his car to the side of the road. Sentence 2: He was trying to observe and drivers that were speeding. Sentence 3: One driver also pulled to the side of the road. Sentence 4: He got out and took off his pants to urinate. Choices: a. She handed referrals to both of them. b. The officer immediately arrested him.

Ex Output:
a

Ex Input:
Title: The Botox Party. Sentence 1: Glenda was invited to a spa party. Sentence 2: She arrived and was surprised to see Botox being done. Sentence 3: She felt uncomfortable and left. Sentence 4: The next week, she saw all the party attendees. Choices: a. Their faces were frozen and strange looking. b. The bus spiraled off the road, killing everyone on it.

Ex Output:
b

Ex Input:
Title: Losing Weight. Sentence 1: Tina had gained fifty pounds over the last year. Sentence 2: She was determined to get into shape. Sentence 3: Tina started to eat right. Sentence 4: Her friends got Tina to join a gym. Choices: a. Tina lost all the weight she had gained. b. Lisa couldn't get the stain out her dress.

Ex Output:
b