<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/MusicRecording>
<https://www.songpop2.com/content/song/%E6%A5%8A%E5%B0%8F%E8%90%8D_%E4%BB%8A%E5%A4%9C%E9%9B%A8%E8%92%99%E8%92%99/PdfRB>