What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_6, if x_6 works, then x_6 is a nurse. For all x_6, if x_6 reads a book, then x_6 is working. There is at least one x_6 for which if x_6 were a nurse, then x_6 is cooking. For all x_6, if x_6 cooks, then x_6 is reading a book.
For all x_6, if x_6 reads a book, then x_6 is a nurse. For all x_6, if x_6 cooks, then x_6 is working. There is at least one x_6 for which if x_6 were a nurse, then x_6 is reading a book. There is at least one x_6 for which if x_6 works, then x_6 is cooking.