Instructions: 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: Title: Stormy Weather. Sentence 1: Roberta heard a crack of thunder. Sentence 2: Her house shook. Sentence 3: The electricity went off. Sentence 4: Roberta lit a candle so she could see in the dark. Choices: a. Buster even had a small pinecone stuck to his fur. b. The power came back on after the storm passed on by.
Output:
b