Consider the following premises. Charles is playing squash if and only if it is raining. If David were a doctor, then it is windy. It is not raining. If it is sunny, then it is windy. It is sunny or David is a doctor. Can we infer the following from them? Charles is not playing squash and it is windy.
 From the fact that if it is sunny, then it is windy, that if David were a doctor, then it is windy, and that it is sunny or David is a doctor we can infer that it is windy. From the fact that Charles is playing squash if and only if it is raining, and that it is not raining we can infer that Charles is not playing squash. Finally, from the fact that Charles is not playing squash, and that it is windy we can infer that Charles is not playing squash and it is windy. Therefore, the answer is yes.