22. Unless the vehicle used is a news medium which publishes or broadcasts in French, public signs and posters and commercial advertising concerning a cultural or educational product within the meaning of section 2, a cultural or educational activity within the meaning of section 11 or a news medium may be exclusively in a language other than French provided that the content of the cultural or educational product is in that other language, the activity is held in that other language or the news medium publishes or broadcasts in that other language, as the case may be.