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_4(x_8) <-> U_1(x_8). forall x_8: ~Q_1(x_8). forall x_8: U_1(x_8) -> Q_1(x_8).
forall x_8: ~U_1(x_8). exists x_8: U_4(x_8) -> U_1(x_8). exists x_8: U_1(x_8) -> U_4(x_8).