sentences:  On January 1, 2017, Borki, Chmielowice, Czarnowąsy, Krzanowice, Sławice, Świerkle, Winów, Wrzoski, Żerkowice as well as parts of Brzezie, Dobrzeń Mały and Karczów became a part of Opole, enlargening its population by about 9,500, and its area by over 5,300 ha, despite the protests of inhabitants.In the early 20th century the number of Polish and bilingual citizens of Opole, according to the official German statistics, varied from 25 to 31%.¹ First census of the city
  
  ² 8,320 German nationality (93.7%) and 557 Polish nationality (6.3%)
  
  ³ 80% German-speaking, 16% Polish-speaking, and 4% bilingual Polish-German-speaking
  
  Alongside German and Polish, many citizens of Opole-Oppeln before 1945 used a strongly German-influenced Silesian dialect (sometimes called "wasserpolnisch" or "wasserpolak").