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 will drive a car. There is at least one x_7 for which if x_7 were a doctor, then x_7 is rich. For all x_7, if x_7 drives a car, then x_7 is rich. For all x_7, if x_7 were rich, then x_7 is driving a car.
For all x_7, x_7 is rich. There is at least one x_7 for which if x_7 were a doctor, then x_7 is driving a car. For all x_7, x_7 will drive a car if and only if x_7 is rich. For all x_7, x_7 is rich if and only if x_7 will drive a car.