What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_8: ~P_8(x_8). forall x_8: P_2(x_8) or ~U(x_8). exists x_8: P_8(x_8) or U(x_8).
exists x_8: U(x_8). forall x_8: U(x_8) -> P_2(x_8).