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: Characters. Sentence 1: She started to write her book. Sentence 2: She just needed more characters. Sentence 3: She thought and thought about them. Sentence 4: She decided on a boy and a dog. Choices: a. He knew then that he had to stop stealing and do right. b. She started to write fervently.

Ex Output:
a

Ex Input:
Title: Knitting Scarves. Sentence 1: Joey's fourth grade class was knitting scarfs for the homeless. Sentence 2: His teacher showed them how to do it and provided wool. Sentence 3: He wasn't excited about knitting but was glad to help homeless people. Sentence 4: Much to his surprise he found he liked to knit. Choices: a. That night at home he knitted two more scarves to donate. b. Rob realized his goal was too unrealistic.

Ex Output:
b

Ex Input:
Title: Too Much Hairspray. Sentence 1: Ed kept making his hair stand higher and higher. Sentence 2: He thought people's reactions to it was very funny. Sentence 3: He managed to make it stand almost a foot up from his head. Sentence 4: It got caught in a ceiling fan and clogged the blades. Choices: a. Ed had to pay for a new fan and a proper haircut. b. Jeremy had a highly active virtual social life, but no external one.

Ex Output:
b