Assertion: polish opera | /r/HasProperty | produced on 11 july
Facets:
value: with wojciech bogusławski's libretto
type: OTHER
Source sentences:
text: The first Polish opera was produced there on 11 July 1778, Maciej Kamieński's Poverty Made Happy, with Wojciech Bogusławski's libretto based on a comedy by Franciszek Bohomolec.