What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_16: W_4(x_16) -> Q_9(x_16). forall x_16: S(x_16) -> Q_16(x_16). forall x_16: ~Q_9(x_16). forall x_16: U(x_16) -> S(x_16). forall x_16: W_4(x_16) <-> Q_16(x_16).
forall x_16: ~W_4(x_16). forall x_16: U(x_16) -> Q_16(x_16). forall x_16: W_4(x_16) -> Q_16(x_16). forall x_16: Q_16(x_16) -> W_4(x_16).