Question: When is the {end time} for {Hesse} where {head of government} as {Georg August Zinn} ?
Paraphrase: When is the {conclusion time} for {Hesse} where {head of government} as {Georg Eminent Zinn} ?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q1199 p:P6 ?s . ?s ps:P6 wd:Q72955 . ?s pq:P582 ?value}