sentences:  Tumas was delegated to the Congress of the Peoples of Russia organized by the Ukrainian Central Rada in Kiev in September 1917.Lithuanians, represented by nine men, including Augustinas Voldemaras and Antanas Tumėnas, were the only participating ethnic group to demand full independence.Upon return, together with Stasys Šilingas and , he was sent to the Lithuanian Conference in Stockholm in October 1917.