What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x_12: Q_12(x_12) -> Q(x_12). forall x_12: P_12(x_12) or Q_12(x_12). forall x_12: P_12(x_12) -> Q(x_12). forall x_12: Q(x_12) <-> R_1(x_12).
exists x_12: Q(x_12). forall x_12: Q(x_12) -> R_1(x_12). forall x_12: R_1(x_12) -> Q(x_12).