What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_7, x_7 is a police officer if and only if x_7 will drive a car. Patricia is a police officer.
There is at least one x for which x is a police officer. For all x_7, if x_7 were a police officer, then x_7 is driving a car. For all x_7, if x_7 drives a car, then x_7 is a police officer.