What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_17, x_17 will take a plane or x_17 will drive a car. For all x_17, x_17 is not a police officer. If John drives a car, then Jessica is a nurse. For all x_17, x_17 will take a plane if and only if x_17 is a police officer.
For all x_17, if x_17 takes a plane, then x_17 is a police officer. For all x_17, if x_17 were a police officer, then x_17 is taking a plane. For all x_17, x_17 will not take a plane.