Question: The successor of Ulrich II, Count of East Frisia was born in what place?
SPARQL query:
PREFIX prop: <http://dbpedia.org/property/>
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Ulrich_II,_Count_of_East_Frisia> prop:successor ?x . ?x prop:placeOfBirth ?uri  . }