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: Revenge. Sentence 1: The dog backed away from the door when she saw it was raining. Sentence 2: Her owner grabbed her by the collar. Sentence 3: The dog found herself pushed outside into the wet garden. Sentence 4: She ran onto the muddy grass to do her business quickly. Choices: a. Once back inside she made a point of shaking herself on her owner. b. The officer let John off with a warning.
Output:
a