How many {inception} are for {Russia} ?
What is the inception for Russia?
What's Russia's inception?
SELECT ( COUNT ( ?a ) AS ?f ) { resource:Russia property:inception ?a }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q159> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P571> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

SELECT (COUNT(?obj) AS ?value ) { wd:Q159 wdt:P571 ?obj }
1