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 drive a car or x_6 is a police officer. For all x_6, if x_6 were fast, then x_6 is driving a car. For all x_6, x_6 is fast or x_6 will sleep. For all x_6, if x_6 sleeps, then x_6 is driving a car.
For all x_6, x_6 will drive a car can be inferred via the universal disjunction elimination rule.