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 seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.

Input: Consider Input: Title: Bustin. Sentence 1: May Larker was a paranormal investigator. Sentence 2: She once claimed to have seen a ghost. Sentence 3: People didn't believe her. Sentence 4: May spent her life trying to prove that ghosts were real. Choices: a. I stumbled upon a huge secret field where we could play in peace. b. When May finally passed, she didn't left nothing but a corpse.

Output: b

Input: Consider Input: Title: Monster. Sentence 1: Kia submitted a picture of Bigfoot to her school newspaper. Sentence 2: Her school published it and accredited her the photographer. Sentence 3: A lot of people asked Kia about it. Sentence 4: In the end, she was forced to admit the truth. Choices: a. It was just her baby brother wearing a costume! b. Tommy's brother found him.

Output: a

Input: Consider Input: Title: Date Night. Sentence 1: Buster invited Marsha on a date and she agreed. Sentence 2: Buster planned out a romantic evening. Sentence 3: They would go for a walk on the pier. Sentence 4: They would dine at a picnic table on the beach. Choices: a. It rained so they went bowling instead. b. He demanded that his friend apologize.
Output: a