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: Fans of Clark. Sentence 1: A heat wave swept the city one summer. Sentence 2: Clark was concerned about his elderly neighbors. Sentence 3: They did not have air conditioning. Sentence 4: Clark bought several large fans for his neighbors. Choices: a. They were thankful to have some relief from the heat. b. She knit blue into the yarn blanket.

Output: a

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: Boxing. Sentence 1: I played the boxing game on nintendo. Sentence 2: Every day after school, I competed with my brother. Sentence 3: He was better than I was and got a lot further. Sentence 4: One day I beat him at the game. Choices: a. He was angry and refused to speak to me. b. He stayed there until he could move into his house.
Output: a