How many {country of origin} are to/by {Kyivska Rus'} ?
Kyivska Rus named how many countries of origin?
How many countries of origin are by Kyivska Rus'?
SELECT ( COUNT ( ?z ) AS ?q ) { ?z property:country_of_origin resource:Kievan_Rus' }
SELECT (COUNT(?sub) AS ?subs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?sub .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P495> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q1108445 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P495 wd:Q1108445 }
6