. "South Korean singer" . . . . . . . "Yuna"@en . . . "solo_singer" . . . "Seo Yuna"@en . "2012Z"^^ . . . . . "1992-12-30Z"^^ . . "Seo Yuna (Born December 30, 1992) is a South Korean idol singer, best known as being the lead vocalist of the South Korean girl group AOA under FNC Entertainment."@en . "Seo Yuna"@en . "1992Z"^^ .