What is the {confederation} for {head of government} of {Jefferson Davis}
What nation is Jeferson Davis a part of?
State the confederation of Jefferson Davis?
SELECT DISTINCT ?s WHERE { ?s property:head_of_government resource:Jefferson_Davis . ?s rdf:type ontology:confederation }
select distinct ?subj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?subj . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P6> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q162269> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q170156> } 
 select distinct ?sbj where { ?sbj wdt:P6 wd:Q162269 . ?sbj wdt:P31 wd:Q170156 } 