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 x_3 for which x_3 will drive a car if and only if x_3 is an astronaut. For all x_3, x_3 is a janitor or x_3 will drive a car. For all x_3, x_3 is an astronaut or x_3 will not go running. For all x_3, if x_3 were a janitor, then x_3 is running.
For all x_3, if x_3 goes running, then x_3 is an astronaut. There is at least one x_3 for which if x_3 drives a car, then x_3 is an astronaut. There is at least one x_3 for which if x_3 were an astronaut, then x_3 is driving a car.