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.

Ex Input:
Title: The Flu. Sentence 1: Erica woke up one morning not feeling well. Sentence 2: She had a runny nose and her muscles hurt. Sentence 3: She went to the doctor and he told her she had the flu. Sentence 4: She went and got medicine and orange juice. Choices: a. She began to feel better in a couple days. b. The milk was spilling everywhere ruining everything.

Ex Output:
a

Ex 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.

Ex Output:
b

Ex Input:
Title: Focus. Sentence 1: Henry had trouble focusing on any task at hand. Sentence 2: And he didn't know what was causing it. Sentence 3: He decided to eat healthier and exercise. Sentence 4: And his mood was much better throughout the day. Choices: a. Months later, Henry was much better at focusing. b. Brenda regret eating so carelessly her whole life.

Ex Output:
a