ここから叩けます
https://vlueprint.org/sparql?default-graph-uri=&qtxt=prefix+vlueprint%3A+%3Chttps%3A%2F%2Fvlueprint.org%2Fschema%2F
%3E%0D%0Aprefix+rdfs%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F2000%2F01%2Frdf-schema%23%3E%0D%0A%0D%0
Aselect+%3FYOUTTUBE+%7B%0D%0A++%3Furi+vlueprint%3AyoutubeChannelId+%3FYOUTTUBE.%0D%0A++%3Furi+rdf
s%3Alabel+%22%E6%9C%88%E3%83%8E%E7%BE%8E%E5%85%8E%22.%0D%0A%7D%0D%0A&format=text%2Fhtml&t
imeout=0&debug=on&run=+Run+Query+