(subclass NorthCentralBirdsHeadLanguage BirdsHeadLanguage) | Languages.kif 13671-13671 | 子類 中北部鳥類頭語 and 鳥頭語言 |
(subclass CentralBirdsHeadLanguage NorthCentralBirdsHeadLanguage) | Languages.kif 13678-13678 | 子類 中央鳥頭語 and 中北部鳥類頭語 |
(subclass NorthBirdsHeadLanguage NorthCentralBirdsHeadLanguage) | Languages.kif 13707-13707 | 子類 北鳥頭語 and 中北部鳥類頭語 |
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