What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_6: P_4(x_6) <-> W_3(x_6). forall x_6: W_3(x_6) or ~S_4(x_6).
forall x_6: S_4(x_6) -> W_3(x_6). forall x_6: P_4(x_6) -> W_3(x_6). forall x_6: W_3(x_6) -> P_4(x_6).