give me all cosmonauts.
SELECT DISTINCT ?uri WHERE { ?uri a <http://dbpedia.org/ontology/Astronaut> { ?uri <http://dbpedia.org/ontology/nationality> <http://dbpedia.org/resource/Russia> } UNION { ?uri <http://dbpedia.org/ontology/nationality> <http://dbpedia.org/resource/Soviet_Union> } }
Russia Soviet_Union