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: Sleepy Bear. Sentence 1: The claw machine roared to life. Sentence 2: He navigated the metal claw onto a stuffed bear. Sentence 3: She squealed with delight as it caught the bear. Sentence 4: He smiled as he gave it to her. Choices: a. Once probably fed and hydrated, Katie felt much better. b. She named it Sleepy Bear because it was wearing a sleep cap.
Example Output: a

Example Input: Title: All in the nose. Sentence 1: Oliver had an exceptional olfactory sense. Sentence 2: He could smell nuances other couldn't. Sentence 3: It helped him very much in developing new perfumes. Sentence 4: He played with subtle scents no one had thought of. Choices: a. The judge allowed Tom to leave and go home! b. And the result was staggering and popular.
Example Output: a

Example Input: Title: Contest. Sentence 1: Anna won her school singing contest. Sentence 2: But her teacher had an even bigger surprise for her. Sentence 3: He had recorded her and submitted the tape to others. Sentence 4: Soon she was entered into the state singing championship! Choices: a. Anna was humbled and amazed by her luck! b. And it worked - Joe went from a D to an A!
Example Output:
b