What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall y: T_4(y) -> R(y). forall y: Q(y) <-> R(y). forall y: T_4(y) or Q(y).
forall y: Q(y) -> R(y). forall y: R(y) -> Q(y).