Question: What territory of Sino French War was the battle of Raoul Magrin-Vernerey fought ?
SPARQL:
 SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Sino-French_War> <http://dbpedia.org/ontology/territory> ?uri. <http://dbpedia.org/resource/Raoul_Magrin-Vernerey> <http://dbpedia.org/property/battles> ?uri}