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). R(a_5) or w_2. forall z: ~Q_1(z).
forall z: R(z) -> Q_1(z) can be inferred via the universal biconditional elimination rule. forall z: Q_1(z) -> R(z) can be inferred via the universal biconditional elimination rule. forall z: ~R(z) can be inferred via the universal biconditional elimination rule.