What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x_17: P_17(x_17) -> Q_17(x_17). forall x_17: U(x_17) <-> P_16(x_17). forall x_17: R_2(x_17) <-> U(x_17). forall x_17: ~Q_17(x_17). forall x_17: P_16(x_17) <-> P_17(x_17).
exists x_17: ~P_17(x_17). forall x_17: U(x_17) -> P_16(x_17). forall x_17: R_2(x_17) -> U(x_17). forall x_17: P_16(x_17) -> P_17(x_17). forall x_17: P_16(x_17) -> U(x_17). forall x_17: U(x_17) -> R_2(x_17). forall x_17: P_17(x_17) -> P_16(x_17).