Question: Where was the person born whose successor was Le Hong Phong?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/successor> <http://dbpedia.org/resource/Lê_Hồng_Phong> . ?x <http://dbpedia.org/property/birthPlace> ?uri  . }
Answer: The birthplaces of the predecessors of Le Hong Phong are [French Indochina, Hà Tĩnh, Tonkin].