Consider the following premises. If it is windy, then it is cloudy. If it rains, then it is windy. Sarah is working if and only if it is windy. It is not raining. If it is cloudy, then it is raining. Can we infer the following from them? Sarah is working.
 From the fact that if it is windy, then it is cloudy, and that if it is cloudy, then it is raining we can infer that if it is windy, then it is raining. From the fact that if it rains, then it is windy, and that if it is windy, then it is raining we can infer that it is raining if and only if it is windy. From the fact that it is raining if and only if it is windy, and that it is not raining we can infer that it is not windy. Finally, from the fact that Sarah is working if and only if it is windy, and that it is not windy we can infer that Sarah is not working, which contradicts that Sarah is working. Therefore, the answer is no.