Question: What is the region of the ethnic group which speaks the language of Arkansas?
SPARQL:
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Arkansas> <http://dbpedia.org/ontology/language> ?x . ?x <http://dbpedia.org/property/region> ?uri . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/EthnicGroup>}