Consider the following premises. It is sunny and Mary is a police officer. It is raining if and only if David is an artist. David is not an artist. Can we infer the following from them? It is not sunny.
 From the fact that it is raining if and only if David is an artist, and that David is not an artist we can infer that it is not raining. Finally, from the fact that it is sunny and Mary is a police officer we can infer that it is sunny, which contradicts that It is not sunny. Therefore, the answer is no.