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) or T_1(z). exists z: T(z) or U(z). forall z: Q(z) -> S_1(z). forall z: ~T(z) or Q(z). forall z: T_1(z) -> S_1(z).
exists z: U(z) or Q(z) can be inferred via the existential resolution rule.