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