SELECT DISTINCT ?c ?cn ?capn
 WHERE {
    ?c wdt:P31 wd:Q6256.          ## instanceOf country
    filter not exists {?c wdt:P576 ?X}  ## dissolved date
    ?c rdfs:label ?cn.
    ?c wdt:P36  ?cap . ?cap rdfs:label ?capn  ## capital
    FILTER ((langMatches(lang(?cn),"en") && langMatches(lang(?capn),"en")) ||
            (langMatches(lang(?cn),"ru") && langMatches(lang(?capn),"ru"))    )
    ## FILTER (contains(str(?cn),'Germany'))
 }