Task: Question Understanding
Input (English): Context : Świętosława of Poland (Czech: Svatava Polská (c. 1046-1048 -- 1 September 1126)) was the third wife of Duke (later King) Vratislaus II of Bohemia and the first Queen of Bohemia as of 1085. 
Question : What is Świętosława of Poland's spouse's name?
Output (English): spouse