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_2: R_4(z_2) or ~Q(z_2). exists z_2: R_4(z_2) -> Q(z_2).
forall z_2: Q(z_2) -> R_4(z_2) can be inferred via the universal rewriting rule.