Task: Question Generation
Input (English): On December 25, 1991, the Russian SFSR was renamed the Russian Federation. On December 26, 1991, the USSR was self-dissolved by the Soviet of Nationalities, which by that time was the only functioning house of the Supreme Soviet (the other house, Soviet of the Union, had already lost the quorum after recall of its members by the union republics). After dissolution of the USSR, Russia declared that it assumed the rights and obligations of the dissolved central Soviet government, including UN membership.
Output (English): On what date was the USSR dissolved?