Task: Explanation
Input (English): Denis Ivanovich Fonvizin (Russian: Дени́с Ива́нович Фонви́зин , from German: "von Wiesen" ; 14 April [O.S. 3 April] 1744 or 1745 12 December [O.S. 1 December] 1792 ) was a playwright of the Russian Enlightenment, whose plays are still staged today. His main works are two satirical comedies which mock contemporary Russian gentry. Question: Who was this playwright of the Russian Enlightenment whose works were edited and published by Pyotr Yefremov and whose satirical comedies mock contemporary Russian gentry? Answer: Denis Fonvizin
Output (English):  His main works are two satirical comedies which mock contemporary Russian gentry.