What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall z_3: U_1(z_3). forall z_3: R_2(z_3). forall z_3: R_2(z_3) -> Q_6(z_3).
forall z_3: Q_6(z_3). forall z_3: U_1(z_3) and R_2(z_3). forall z_3: R_2(z_3) and U_1(z_3).