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 climbs a mountain, then x is cooking. There is at least one x for which x is a bartender if and only if x will cook.
There is at least one x for which if x were a bartender, then x is cooking. There is at least one x for which if x cooks, then x is a bartender.