Question: In what year did the line from which Premyslaw II come from become extinct?
Sentence (from "Duchy of Teschen"): The Duchy of Teschen (German: "Herzogtum Teschen" ), also Duchy of Cieszyn (Polish: "Księstwo Cieszyńskie" ) or Duchy of Těšín (Czech: "Těšínské knížectví" , was one of the Duchies of Silesia centered on Cieszyn ("Teschen") in Upper Silesia.
Relevant evidence: No