Assertion: polka | /r/AtLocation | the middle of the 19th century
Facets:
Source sentences:
text: It originated in the middle of the 19th century in Bohemia.
text: It originated in the middle of the 19th century in the Czech lands and is still a common genre in Swedish, Lithuanian, Czech, Polish, Dutch, German, Hungarian, Austrian, Russian, Slovenian and Slovakian folk music.
text: It originated in the middle of the 19th century in the Czech lands and is still a common style in Lithuanian, Czech, Croatian, Slovenian, Polish, German, Hungarian, Austrian, Ukrainian, Belarusian, Russian, and Slovakian folk music.