What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_8: S(x_8). forall x_8: W_1(x_8). forall x_8: W_2(x_8) <-> S(x_8).
forall x_8: S(x_8) and W_1(x_8). forall x_8: W_1(x_8) and S(x_8). forall x_8: W_2(x_8) -> S(x_8). forall x_8: S(x_8) -> W_2(x_8).