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.

Example Input: Title: The Flu Shot. Sentence 1: The woman didn't want to catch the flu. Sentence 2: She got a flu shot from her doctor. Sentence 3: She hoped it would keep her healthy all winter. Sentence 4: In January, her body started aching. Choices: a. She had caught the flu anyway! b. Then Charles realized he'd forgotten his gun!
Example Output: b

Example Input: Title: Research. Sentence 1: I'm writing a play about a folk musician. Sentence 2: I want to read a biography about him to get started. Sentence 3: There are two extant biographies of his life. Sentence 4: I went to the local branch of the library. Choices: a. Kia felt a tiny bit better hearing the wonderful news. b. They have copies of both, at another branch.
Example Output: a

Example Input: Title: Universal Studios. Sentence 1: The family planned their first trip to Universal Studios. Sentence 2: They were excited to go on all the rides. Sentence 3: They saw a lot of the characters. Sentence 4: They spent three days in the park. Choices: a. After complaining, I was given delicious, ketchup free fries. b. They were sad to come home.
Example Output:
a