What is the nationality of the economist who is one of the important people in the Foundation for Economic Education?
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Foundation_for_Economic_Education> <http://dbpedia.org/ontology/keyPerson> ?x . ?x <http://dbpedia.org/ontology/nationality> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Economist>}
Foundation_for_Economic_Education