Consider the following premises. It is sunny or Karen is not an electrician. It is sunny if and only if David is listening to a song. Karen is an electrician or David is listening to a song. Can we infer the following from them? It is not sunny.
 From the fact that it is sunny or Karen is not an electrician we can infer that if Karen were an electrician, then it is sunny. From the fact that it is sunny if and only if David is listening to a song we can infer that if David listens to a song, then it is sunny. Finally, from the fact that if Karen were an electrician, then it is sunny, that if David listens to a song, then it is sunny, and that Karen is an electrician or David is listening to a song we can infer that it is sunny, which contradicts that It is not sunny. Therefore, the answer is no.