What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x, if x plays a game, then x is a nurse. For all x, x will take a plane or x is not a nurse. There is at least one x for which if x sleeps, then x is playing a game.
There is at least one x for which if x sleeps, then x is a nurse. For all x, if x were a nurse, then x is taking a plane.