<http://schema.org/headline>
"Polonaise in B-Flat Minor, Op. posth. by Nikita Magaloff"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.songpop2.com/content/song/Nikita-Magaloff_Polonaise-in-B-Flat-Minor-Op-posth/OKo7G>