What is the {constitutional republic} for {diplomatic relation} of {Russian Empire}
Which Constitutional Republic of the Russian Empire is used for diplomatic relations?
 select distinct ?obj where { wd:Q34266 wdt:P530 ?obj . ?obj wdt:P31 wd:Q1520223 } 
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q34266> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P530> . ?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/Q1520223> } 
For diplomatic relations, which Constitutional Republic of the Russian empire is used?