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.

Example 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.
Example Output: b

Example Input: Title: Good Wife. Sentence 1: The man spilled wine on his white shirt. Sentence 2: He threw the shirt away. Sentence 3: His wife saw the shirt in the trash. Sentence 4: She took it out and cleaned it. Choices: a. She gave him the shirt with no stains. b. Idris laid in a puddle of sweat.
Example Output: a

Example Input: Title: Malpractice. Sentence 1: Drew prescribed some medicine for his patient. Sentence 2: The patient had a bad reaction to the medicine. Sentence 3: The patient sued Drew for prescribing the wrong medicine. Sentence 4: Drew lost the court case. Choices: a. Russell got in trouble for telling a joke. b. Drew's malpractice insurance doubled.
Example Output:
b