(subclass PalmSunday ChristianHoliday) | Media.kif 459-459 | PalmSunday 是 ChristianHoliday 的 subclass |
(subclass PalmSunday Sunday) | Media.kif 460-460 | PalmSunday 是 星期日 的 subclass |
(subclass PalmSunday MoveableHoliday) | Media.kif 461-461 | PalmSunday 是 可动的假期 的 subclass |