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(x_2) -> S(x_2). forall x_2: S_3(x_2) or ~S(x_2). forall x_2: S_3(x_2) -> P(x_2).
forall x_2: S_3(x_2) -> S(x_2) can be inferred via the universal transitivity rule. forall x_2: S(x_2) -> S_3(x_2) can be inferred via the universal rewriting rule.