 Complete the following phrase:  After World War I, in the Upper Silesia plebiscite held in March 1921, 79.5 of the citizens of Guttentag came out in favour of a continuance in Germany, and while most parts of the Lubliniec district were reintegrated with the re-established Polish Republic, Dobrodzień, as Guttentag, remained on the German side, within the Prussian Province of Upper Silesia and ended up very close to the new GermanPolish border. In May 1921 it was still captured by Polish insurgents during the 