What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? T(a_3) -> w. forall x: T(x) <-> R(x). w -> R(a_3).
T(a_3) -> R(a_3). forall x: T(x) -> R(x). forall x: R(x) -> T(x).