What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_5, if x_5 cooks, then x_5 is not a mechanic. For all x_5, if x_5 cooks, then x_5 is driving a car. For all x_5, x_5 is a mechanic. For all x_5, if x_5 drives a car, then x_5 is cooking.
For all x_5, x_5 will not cook. For all x_5, x_5 will cook if and only if x_5 will drive a car. For all x_5, x_5 will drive a car if and only if x_5 will cook.