What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_14: U_1(x_14) <-> P_14(x_14). P_14(a_14).
exists x: P_14(x). forall x_14: U_1(x_14) -> P_14(x_14). forall x_14: P_14(x_14) -> U_1(x_14).