Consider the following premises. Charles is a musician if and only if Thomas is a lawyer. Jessica is reading a book or it is not windy. Charles is not a musician. Thomas is a lawyer if and only if Jessica is reading a book. Can we infer the following from them? If we can, name the inference rule being used: It is windy.
 From the fact that Charles is a musician if and only if Thomas is a lawyer, and that Charles is not a musician we can infer that Thomas is not a lawyer via biconditional elimination. From the fact that Thomas is a lawyer if and only if Jessica is reading a book, and that Thomas is not a lawyer we can infer that Jessica is not reading a book via biconditional elimination. From the fact that Jessica is reading a book or it is not windy we can infer that if it is windy, then Jessica is reading a book via rewriting. Finally, from the fact that if it is windy, then Jessica is reading a book, and that Jessica is not reading a book we can infer that it is not windy via modus tollens, which contradicts that It is windy. Therefore, the answer is no.