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 drives a car, then x_5 is a mechanic. For all x_8, x_8 will write a letter or x_8 will drive a car. For all x_8, x_8 will not write a letter.
For all x_8, x_8 will drive a car.