Consider the following premises. If it is windy, then Patricia is not a writer. For all y, y is a writer. William 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 for all y, y is a writer we can infer that Patricia is a writer via universal instantiation. Finally, from the fact that if it is windy, then Patricia is not a writer, and that Patricia is a writer we can infer that it is not windy via modus tollens, which contradicts that It is windy. Therefore, the answer is no.