| (subclass AlphaIDString FormalIdentifier) | Media.kif 2968-2968 | AlphaIDString 是 FormalIdentifier 的 subclass |
| (subclass AlphaIDString AlphabeticString) | Media.kif 2969-2969 | AlphaIDString 是 AlphabeticString 的 subclass |
| (subclass Alpha3IDString AlphaIDString) | Media.kif 2983-2983 | Alpha3IDString 是 AlphaIDString 的 subclass |
| (subclass Alpha2IDString AlphaIDString) | Media.kif 2998-2998 | Alpha2IDString 是 AlphaIDString 的 subclass |
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