1. Upper Prs�g became a language island in the 16th century. 2. Therefore, Embedded Language islands are under the constraint of Matrix Language grammar. 3. Owase are also far different from other Kansai dialects, and considered a language island . 4. More characteristic were the German language islands : towns inhabited by German minorities and surrounded by Czechs. 5. A " language island " is a language area that is completely surrounded by a language border. 6. It is unrelated to the Germanic Cimbrian language spoken in other language islands in Trentino and Veneto. 7. There are also two language islands , the Sant'Antioco island ( south-west Sardinia ). 8. The Olomouc language island ceased to exist after the expulsion of Germans from Czechoslovakia in 1945 and 1946. 9. A "'Matrix Language island "'is a constituent composed entirely of Matrix Language morphemes. 10. The "'Olomouc language island "'was a Czech-speaking area of central Moravia.