CREATE TABLE table_21952 ("Country / Region" TEXT, "Name" TEXT, "Host ( s ) " TEXT, "Channel" TEXT, "Premiere / Aired" TEXT, "Seasons" TEXT)

Which channel has the host Art Rooijakkers?
SELECT "Channel" FROM table_21952 WHERE "Host(s)" = 'Art Rooijakkers'
SELECT "Channel" FROM "table_21952" WHERE "Host(s)" = 'Art Rooijakkers'