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 z: U(z) -> P(z). forall z: ~P(z). forall z: U(z) or ~P(z).
forall z: ~U(z) can be inferred via the universal modus tollens rule. forall z: P(z) -> U(z) can be inferred via the universal rewriting rule.