What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x: R(x) <-> Q_3(x). forall x: ~Q_3(x). forall x: R(x) -> T_3(x). forall x: R(x) <-> T_3(x).
forall x: R(x) -> Q_3(x). forall x: R(x) -> T_3(x). forall x: Q_3(x) -> R(x). forall x: T_3(x) -> R(x). forall x: ~R(x).