Question: What are the county seats of the region which operates the Boeing Field?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Boeing_Field> onto:operator ?x . ?x onto:countySeat ?uri  . ?x rdf:type onto:Region}