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: Pam Discovers Authentic Mexican Cuisine. Sentence 1: Pam never cared much for Mexican food. Sentence 2: She would go to a Mexican restaurant if her friends really wanted to. Sentence 3: One day, they went to a new place with more authentic Mexican cuisine. Sentence 4: Pam loved the authentic style with its creamy cheese and milder sauce. Choices: a. Sushi is Kole's new favorite food. b. She realized it was the Americanized version she didn't care for.

Ex Output:
a

Ex Input:
Title: Pet. Sentence 1: Will decided he'd like to have a pet. Sentence 2: Will went to a local pet store. Sentence 3: He narrowed his choices down to either a lab puppy or a turtle. Sentence 4: Will decided on the puppy. Choices: a. The change had been scary, but she was so happy she had done it. b. Now, years later, Will and that lab are best friends.

Ex Output:
a

Ex Input:
Title: Speech. Sentence 1: Ken was asked to give a speech at his local college. Sentence 2: Ken spent many hours preparing the speech. Sentence 3: He asked his friends to listen to him practice. Sentence 4: On the day of the speech, Ken forgot many lines. Choices: a. Ken decided to avoid giving speeches in the future. b. And later, they spoke of world peace around a fire all night.

Ex Output:
b