@prefix pq: <http://www.wikidata.org/prop/qualifier/> .
@prefix ps: <http://www.wikidata.org/prop/statement/> .
@prefix wds: <http://www.wikidata.org/entity/statement/> .
@prefix wikibase: <http://wikiba.se/ontology#> .

wds:P2397-c19bbb8d-44f0-7ef1-733f-eb855a068be5 a wikibase:BestRank ;
    wikibase:rank wikibase:NormalRank ;
    pq:P13337 "www.youtube.com" ;
    ps:P8966 "^https?:\\/\\/(?:www\\.)?youtube\\.com\\/feeds\\/videos\\.xml\\?(?:[^#]*&)?channel_id=(UC[-_0-9A-Za-z]{21}[AQgw])" .