What is the {business} for {central bank/issuer} of {Russian ruble}
Which bank issued the Russian ruble?
 select distinct ?obj where { wd:Q41044 wdt:P562 ?obj . ?obj wdt:P31 wd:Q4830453 } 
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q41044> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P562> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj . ?obj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q4830453> } 
Which bank issued the Russian ruble?