What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x_5: R_4(x_5) -> Q_5(x_5). forall x_5: ~Q_5(x_5). forall x_5: R_4(x_5) or ~P_2(x_5).
exists x_5: ~R_4(x_5). forall x_5: P_2(x_5) -> R_4(x_5).