(subclass Correspondence Document) | Media.kif 952-952 | Correspondence 是 Document 的 subclass |
(subclass Letter Correspondence) | Media.kif 953-953 | 信件 是 Correspondence 的 subclass |
(subclass FaxMessage Correspondence) | Media.kif 1010-1010 | FaxMessage 是 Correspondence 的 subclass |
(subclass EmailMessage Correspondence) | Media.kif 1028-1028 | EmailMessage 是 Correspondence 的 subclass |