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是……的子分类"是……的子分类 <span style="font-size:small;">(Subcategory of)</span>" is a predefined property to define that a category is a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_property_Subcategory_of">subcategory of</a> another and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.