What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_6, if x_6 climbs a mountain, then x_6 is working. For all x_6, if x_6 works, then x_6 is driving a car. For all x_6, if x_6 drives a car, then x_6 is working. There is at least one x_6 for which if x_6 works, then x_6 is climbing a mountain. For all x_6, x_6 will not drive a car.
For all x_6, x_6 will not work. For all x_6, if x_6 climbs a mountain, then x_6 is driving a car. There is at least one x_6 for which if x_6 drives a car, then x_6 is climbing a mountain. For all x_6, x_6 will work if and only if x_6 will drive a car. For all x_6, x_6 will drive a car if and only if x_6 will work. There is at least one x_6 for which x_6 will work if and only if x_6 will climb a mountain. There is at least one x_6 for which x_6 will climb a mountain if and only if x_6 will work.