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: Ice Cream. Sentence 1: Swarthanger took a leisurely stroll down Broad St. Sentence 2: He noticed a man on top of a ledge of a building. Sentence 3: Swarthanger screamed and told him not to jump. Sentence 4: He said he would buy him an ice cream cone if he didn't. Choices: a. The man insisted it be Rocky Road, and ran down to get the ice cream. b. We laughed at all the psychics in the family.

Ex Output:
b

Ex Input:
Title: Towels. Sentence 1: She needed new towels. Sentence 2: She drove to the store. Sentence 3: She found some in her favorite colors. Sentence 4: She chose the dark brown and black ones. Choices: a. She bought ten new towels. b. When Jimmy finally woke up he had missed his interview.

Ex Output:
b

Ex Input:
Title: Vinegar. Sentence 1: My stomach had been hurting all day. Sentence 2: My cousin told me to try drinking vinegar. Sentence 3: I drank some apple cider vinegar. Sentence 4: An hour later the pain was much worse. Choices: a. I told my cousin I would never do it again. b. Tom left it alone.

Ex Output:
b