What is the {list of historical unrecognized state} for {head of government} of {Jefferson Davis}
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Which is the list of historical unrecognized state for Jefferson Davis as head of government?
SELECT DISTINCT ?q WHERE { ?q rdf:type ontology:list_of_historical_unrecognized_states . ?q 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/Q4818345> } 
 select distinct ?sbj where { ?sbj wdt:P6 wd:Q162269 . ?sbj wdt:P31 wd:Q4818345 } 