What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_14: S(x_14) -> U_2(x_14). forall x_14: U_2(x_14) -> S(x_14). forall x_14: P_12(x_14) <-> S(x_14). exists x_14: U_2(x_14) or ~R_3(x_14). forall x_14: ~P_12(x_14).
exists x_14: R_3(x_14) -> U_2(x_14). forall x_14: S(x_14) <-> U_2(x_14). forall x_14: U_2(x_14) <-> S(x_14). forall x_14: P_12(x_14) -> S(x_14). forall x_14: S(x_14) -> P_12(x_14). forall x_14: ~S(x_14).