What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: forall x: ~S(x). forall x: S(x) or P(x). forall x: ~Q(x). exists x: Q(x) or S_4(x).
forall x: P(x) can be inferred via the universal disjunctive syllogism rule. exists x: S_4(x) can be inferred via the existential disjunctive syllogism rule.