Who fought in the battle at Tupelo Mississippi?
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/place> <http://dbpedia.org/resource/Tupelo,_Mississippi> . ?x <http://dbpedia.org/property/combatant> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/MilitaryConflict>}
Tupelo,_Mississippi