What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_11: W(x_11) <-> S_11(x_11). ~S_11(c).
forall x_11: W(x_11) -> S_11(x_11). forall x_11: S_11(x_11) -> W(x_11).