<https://ko.coursera.org/lecture/ml-foundations-ko/ribyu-gamjeong-bunseog-bunryu-sarye-yeongu-cyVya#lecture>
<http://schema.org/duration>
"PT38S"
<https://ko.coursera.org/lecture/ml-foundations-ko/ribyu-gamjeong-bunseog-bunryu-sarye-yeongu-cyVya>