Consider the following premises. If Jessica were an office clerk, then it is overcast. It is windy if and only if it is overcast. If it is windy, then Jessica is an office clerk. Can we infer the following from them? Jessica is an office clerk if and only if it is windy.
 From the fact that it is windy if and only if it is overcast we can infer that if it is overcast, then it is windy. From the fact that if Jessica were an office clerk, then it is overcast, and that if it is overcast, then it is windy we can infer that if Jessica were an office clerk, then it is windy. Finally, from the fact that if Jessica were an office clerk, then it is windy, and that if it is windy, then Jessica is an office clerk we can infer that Jessica is an office clerk if and only if it is windy. Therefore, the answer is yes.