Consider the following premises. For all x_15, if x_15 drives a car, then x_15 is a doctor. It is overcast if and only if Barbara is driving a car. For all x_15, x_15 is not a doctor. Can we infer the following from them? It is not overcast or it is windy.
 From the fact that for all x_15, if x_15 drives a car, then x_15 is a doctor, and that for all x_15, x_15 is not a doctor we can infer that for all x_15, x_15 will not drive a car. From the fact that for all x_15, x_15 will not drive a car we can infer that Barbara is not driving a car. From the fact that it is overcast if and only if Barbara is driving a car, and that Barbara is not driving a car we can infer that it is not overcast. Finally, from the fact that it is not overcast we can infer that it is not overcast or it is windy. Therefore, the answer is yes.