Assertion: opera's performance | /r/HasProperty | first belarusian ballet
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Source sentences:
text: The performances by the theatre company during the "Decade of Belarusian Art" in Moscow in June 1940 was a great success which included the first Belarusian ballet, The Nightingale composed by Mikhail Kroshner, as well as other national operas such as "In the Dense Forest of Palesse", "The Flower of Fortune", and the second version of "Mikhas Padgorny".