sentences:  From 29 April to 4 May 1872 Nikola Obretenov was a delegate to the meeting in Bucharest.Twenty-five people — representatives of the private revolutionary committees of Bulgaria and Wallachia — took part.They accepted the new statutes of BRCK, re-elected Karavelov as a chairman of the Bucharest committee, and authorized Vasil Levski to form a "Temporary government" in Bulgaria, wherever he would find appropriate.