sentences:  By the start of the 20th century more serious drama was being staged.In 1906, the society became the basis for the professional theatre called "Estonia" founded by the directors and actors Paul Pinna and Theodor Altermann.This remained tied to the "Estonia" society and the Estonian Theatre "Estonia" Limited Liability Company, founded in 1908, until 1940, at which time they were disbanded under the Soviet rule in Estonia as part of "the bourgeois remnant" and the theatre was nationalized.