What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x_8: U(x_8) or ~Q_8(x_8). forall x_8: P_4(x_8) -> Q_8(x_8). forall x_8: R(x_8) -> U(x_8). forall x_8: P_4(x_8) or R(x_8).
exists x_8: Q_8(x_8) -> U(x_8).