Question: When did the Republic of Bashkortostan cease to be under the administrative territorial entity of the Russian Soviet Federative Socialist Republic?
Paraphrase: When did the Republic of Bashkortostan terminate to be beneath the regulatory regional substance of the Russian Soviet Federative Communist Republic?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q5710 p:P131 ?s . ?s ps:P131 wd:Q2184 . ?s pq:P582 ?value}