<https://learn2.co.kr/%ed%8c%80-%eb%ac%b8%ec%a0%9c%ed%95%b4%ea%b2%b0-%ec%9b%8c%ed%81%ac%ec%88%8d/#article>
<http://schema.org/inLanguage>
"ko-KR"
<https://learn2.co.kr/%ED%8C%80-%EB%AC%B8%EC%A0%9C%ED%95%B4%EA%B2%B0-%EC%9B%8C%ED%81%AC%EC%88%8D/>