What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: For all x_6, x_6 will not read a book. For all x_6, if x_6 reads a book, then x_6 is sleeping. For all x_6, x_6 will drive a car or x_6 is a server. For all x_6, if x_6 sleeps, then x_6 is driving a car. For all x_6, if x_6 drives a car, then x_6 is reading a book.
For all x_6, x_6 will not drive a car can be inferred via the universal modus tollens rule. For all x_6, if x_6 reads a book, then x_6 is driving a car can be inferred via the universal transitivity rule. For all x_6, if x_6 sleeps, then x_6 is reading a book can be inferred via the universal transitivity rule. For all x_6, if x_6 drives a car, then x_6 is sleeping can be inferred via the universal transitivity rule.