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(z_2) or U(z_2). forall z_2: U(z_2) -> T_1(z_2). exists z_2: S(z_2). forall z_2: T_1(z_2) or ~R(z_2).
forall z_2: R(z_2) -> T_1(z_2) can be inferred via the universal rewriting rule.