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: Cat Alarm. Sentence 1: My cat woke me up this morning. Sentence 2: She jumped on my bed and started meowing in my face. Sentence 3: I did not want to get up, but she wouldn't go away. Sentence 4: Finally, I pulled off the covers and followed her to her food bowl. Choices: a. Renny's son and her favorite cup fell to the ground and her cup broke. b. All she wanted was her breakfast.
Example Output: b

Example Input: Title: Walter's Weird Night. Sentence 1: Walter noticed something strange in the sky one night. Sentence 2: He didn't believe in space aliens, but he was confused. Sentence 3: He was sure he had seen a flying saucer in the night sky. Sentence 4: Then he saw on the news that a weather balloon had crashed. Choices: a. Walter was relieved that aliens hadn't come visiting after all. b. The person in front of me paid for my drink, Good Samaritan score!
Example Output: a

Example Input: Title: Scaffolding. Sentence 1: The painter climbed the scaffolding. Sentence 2: He started painting the side of the building. Sentence 3: The scaffolding felt wobbly. Sentence 4: The painter climbed down. Choices: a. He found that some of the joints were loose. b. Lee and his dog froze to death on a particularly cold night.
Example Output:
a