What is the {constitutional republic} for {head of government} of {Jefferson Davis}
Jefferson Davis is the head of government for which protected republic?
Jefferson Davis is the head of government for which constitutional republic?
SELECT DISTINCT ?v WHERE { ?v rdf:type ontology:constitutional_republic . ?v property:head_of_government resource:Jefferson_Davis }
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/Q1520223> } 
 select distinct ?sbj where { ?sbj wdt:P6 wd:Q162269 . ?sbj wdt:P31 wd:Q1520223 } 