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 genius. Sentence 1: Tim was no ordinary boy, by the age of ten he was in high school. Sentence 2: His parents were proud of his rapid learning and encouraged him. Sentence 3: He did even better in high school, advancing to college. Sentence 4: By the time he was done with college he was only 16. Choices: a. He went on to do many great thing and all under the age of 20. b. All this time he was stealing from homes to buy the things he had.
Example Output: b

Example Input: Title: Trust. Sentence 1: I told her I could never trust her again. Sentence 2: She didn't seem to be perturbed by the revelation. Sentence 3: I argued that she had lied one too many times. Sentence 4: She said I would trust her again someday. Choices: a. Andy was glad that a medical team was there to take care of him. b. She did not put any effort into regaining my trust.
Example Output: a

Example Input: Title: New shoes. Sentence 1: I went shoe shopping yesterday. Sentence 2: I couldn't find any nice pairs. Sentence 3: Finally I found the perfect pair. Sentence 4: But they cost too much. Choices: a. So I had to wait until they went on sale. b. But, she still whined all night.
Example Output:
b