Consider the following premises. If Richard drives a car, then it is windy. Patricia is a server if and only if it is windy. It is not snowing. It is snowing if and only if Patricia is a server. Can we infer the following from them? Richard is driving a car.
 From the fact that it is snowing if and only if Patricia is a server we can infer that if Patricia were a server, then it is snowing. From the fact that Patricia is a server if and only if it is windy we can infer that if it is windy, then Patricia is a server. From the fact that if Richard drives a car, then it is windy, and that if it is windy, then Patricia is a server we can infer that if Richard drives a car, then Patricia is a server. From the fact that if Richard drives a car, then Patricia is a server, and that if Patricia were a server, then it is snowing we can infer that if Richard drives a car, then it is snowing. Finally, from the fact that if Richard drives a car, then it is snowing, and that it is not snowing we can infer that Richard is not driving a car, which contradicts that Richard is driving a car. Therefore, the answer is no.