Consider the following premises. If it is sunny, then it is not overcast. It is not windy. It is raining if and only if it is windy. It is raining or it is overcast. Can we infer the following from them? If we can, name the inference rule being used: It is sunny.
 From the fact that it is raining if and only if it is windy, and that it is not windy we can infer that it is not raining via biconditional elimination. From the fact that it is raining or it is overcast, and that it is not raining we can infer that it is overcast via disjunctive syllogism. Finally, from the fact that if it is sunny, then it is not overcast, and that it is overcast we can infer that it is not sunny via modus tollens, which contradicts that It is sunny. Therefore, the answer is no.