Question: Who was engaged in wars of Fort Gadsden and Fort Barrancas?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?uri <http://dbpedia.org/ontology/battle> <http://dbpedia.org/resource/Fort_Gadsden> . ?uri <http://dbpedia.org/ontology/battle> <http://dbpedia.org/resource/Fort_Barrancas> . }
Answer: The person who fought on both Fort Gadsden and Fort Barrancas battles is [Andrew Jackson].