<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/MusicRecording>
<https://www.songpop2.com/content/song/Ren%C3%A9-Carol-%26-Maria-Mucke_Wenn-Die-Alten-B%C3%A4ume-Leise-Rauschen/P8kbv>