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 is a police officer or x_6 will not drive a car. For all x_6, if x_6 plays squash, then x_6 is a scientist. For all x_6, if x_6 were a scientist, then x_6 is driving a car.
For all x_6, if x_6 plays squash, then x_6 is driving a car can be inferred via the universal transitivity rule. For all x_6, if x_6 drives a car, then x_6 is a police officer can be inferred via the universal rewriting rule.