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_2: P_3(x_2) and S_2(x_2).
forall x_2: P_3(x_2) can be inferred via the universal simplification rule. forall x_2: S_2(x_2) can be inferred via the universal simplification rule.