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 does not connect with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes less sense.

Example Input: Title: Huner in the woods.. Sentence 1: There was once a Hunter in the woods named dave. Sentence 2: That hunter had come out with his bow and arrow to hunt for food. Sentence 3: The hunter heard a noise from a bush, and thought it was a bird. Sentence 4: The hunter readied his bow, and aimed it at the bush. Choices: a. But a wild hog emerged, and chased Dave out of the woods. b. The man went to get a new pitcher.
Example Output: b

Example Input: Title: River Accident. Sentence 1: Tim was playing with other kids. Sentence 2: They were by the river. Sentence 3: Someone dared Tim to jump in. Sentence 4: He didn't want to but did anyway. Choices: a. When done, Sally looked into the mirror and knew she looked amazing. b. Tim was swept away.
Example Output: a

Example Input: Title: X-Ray results. Sentence 1: Dan recently fell and injured his leg badly. Sentence 2: Dan was taken to the local hospital for treatment. Sentence 3: Dan's doctor decided to take an X-ray of the injured leg. Sentence 4: After the X-ray, Dan learned he had a broken leg. Choices: a. We finished in second place. b. Dan was saddened that his leg was broken because of the fall.
Example Output:
a