What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_24: P_21(x_24) <-> Q_21(x_24). exists x_24: ~Q_21(x_24). forall x_24: P_24(x_24) <-> W(x_24). forall x_24: P_3(x_24) -> P_24(x_24). forall x_24: P_21(x_24) or P_3(x_24).
forall x_24: P_21(x_24) -> Q_21(x_24). forall x_24: P_24(x_24) -> W(x_24). forall x_24: Q_21(x_24) -> P_21(x_24). forall x_24: W(x_24) -> P_24(x_24). exists x_24: ~P_21(x_24).