(subclass HousekeepingPolicy Policy) | Hotel.kif 2637-2637 | HousekeepingPolicy 是 Policy 的 subclass |
(subclass DailyHousekeepingPolicy HousekeepingPolicy) | Hotel.kif 2649-2649 | DailyHousekeepingPolicy 是 HousekeepingPolicy 的 subclass |
(subclass NoHousekeepingPolicy HousekeepingPolicy) | Hotel.kif 2676-2676 | NoHousekeepingPolicy 是 HousekeepingPolicy 的 subclass |
(subclass WithHousekeepingPolicy HousekeepingPolicy) | Hotel.kif 2699-2699 | WithHousekeepingPolicy 是 HousekeepingPolicy 的 subclass |