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: R(z) -> Q_1(z). forall z: P(z) or R(z). forall z: Q_1(z) or ~Q_3(z). exists z: ~P(z) or Q_3(z).
exists z: R(z) or Q_3(z) can be inferred via the existential resolution rule. forall z: Q_3(z) -> Q_1(z) can be inferred via the universal rewriting rule.