What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall y_3: U_2(y_3) <-> P_1(y_3). R_1(a_7) -> P_1(a_14). forall x_7: R_1(x_7) <-> S_7(x_7). ~U_2(a_14).
forall y_3: U_2(y_3) -> P_1(y_3). forall x_7: R_1(x_7) -> S_7(x_7). forall y_3: P_1(y_3) -> U_2(y_3). forall x_7: S_7(x_7) -> R_1(x_7).