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: T_1(z) or ~P_4(z). exists z: ~S(z). forall z: T_1(z) -> S(z).
exists z: ~T_1(z) can be inferred via the existential modus tollens rule. forall z: P_4(z) -> T_1(z) can be inferred via the universal rewriting rule.