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

wds:P349-4f919443-4f1c-e004-e72a-546aae3c54ff a wikibase:BestRank ;
    wikibase:rank wikibase:NormalRank ;
    ps:P1793 "(a1|s)?[0-9]?\\d{8}" .