What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x, x will drive a car or x will not work. For all x, if x sleeps, then x is working. For all x, x is a lawyer if and only if x will drive a car. For all x, x will sleep or x is a lawyer.
For all x, if x works, then x is driving a car. For all x, if x were a lawyer, then x is driving a car. For all x, if x drives a car, then x is a lawyer.