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: Bracelet. Sentence 1: My wife received an Alex and Ani bracelet as a gift. Sentence 2: She cannot wear bracelets due to a medical condition. Sentence 3: She emailed the company about an exchange. Sentence 4: They allowed her to exchange the bracelet for a necklace. Choices: a. So his father bought him a small oven and gave him a bag of steaks. b. She was pleased with the company's customer service.

Ex Output:
a

Ex Input:
Title: Going to the Park. Sentence 1: Ken went to the park to walk around. Sentence 2: He needed to clear his head. Sentence 3: The air was crisp and the mood was lazy. Sentence 4: Ken enjoyed walking on the soft grass. Choices: a. It helped him get in a better state of mind. b. She got better but never made the same mistake again.

Ex Output:
b

Ex Input:
Title: The Wedding. Sentence 1: Tom and Nancy had been engaged for a year. Sentence 2: Their big day had arrived. Sentence 3: All of their planning failed, however. Sentence 4: A tornado blew through town as the ceremony started. Choices: a. Nancy forgot to add the oregano. b. The reception was cancelled.

Ex Output:
a