what is the {end time} for {Hesse} has {head of government} as {Georg August Zinn} ?
When is the {end time} for {Hesse} where {head of government} as {Georg August Zinn} ?
SELECT ?value WHERE { wd:Q1199 p:P6 ?s . ?s ps:P6 wd:Q72955 . ?s pq:P582 ?value}
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1199> .
?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/Q72955> .
?statement <http://www.wikidata.org/entity/P582> ?value. 
} 

When is the {conclusion time} for {Hesse} where {head of government} as {Georg Eminent Zinn} ?