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_12: Q_7(x_12) -> Q(x_12). exists x_12: P_7(x_12) -> Q(x_12). forall x_12: P_7(x_12) or Q_7(x_12). forall x_12: S(x_12) and Q_12(x_12).
forall x_12: S(x_12) can be inferred via the universal simplification rule. forall x_12: Q_12(x_12) can be inferred via the universal simplification rule. exists x_12: Q(x_12) can be inferred via the existential disjunction elimination rule.