What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_12: ~U(x_12). exists x_12: Q(x_12) or ~S(x_12). forall x_12: Q_6(x_12) -> Q(x_12). forall x_12: U(x_12) -> Q_6(x_12). forall x_12: Q(x_12) -> U(x_12).
forall x_12: ~Q(x_12). forall x_12: Q_6(x_12) -> U(x_12). forall x_12: U(x_12) -> Q(x_12). forall x_12: Q(x_12) -> Q_6(x_12). exists x_12: S(x_12) -> Q(x_12).