Consider the following premises. If it snows, then James is curious. If James were curious, then Susan is working. If Karen climbs a mountain, then it is snowing. Karen is climbing a mountain or it is not cold. Can we infer the following from them? If it is cold, then Susan is working.
 From the fact that Karen is climbing a mountain or it is not cold we can infer that if it is cold, then Karen is climbing a mountain. From the fact that if it snows, then James is curious, and that if James were curious, then Susan is working we can infer that if it snows, then Susan is working. From the fact that if it is cold, then Karen is climbing a mountain, and that if Karen climbs a mountain, then it is snowing we can infer that if it is cold, then it is snowing. Finally, from the fact that if it is cold, then it is snowing, and that if it snows, then Susan is working we can infer that if it is cold, then Susan is working. Therefore, the answer is yes.