 is an American television quiz show created by Merv Griffin, in which contestants are presented with trivia clues in the form of answers and must phrase their responses in the form of a question.The show has experienced a long life in several incarnations over the course of nearly a half-century, spending more than 11 years as a daytime network program and having currently run in syndication for 35 seasons.It has also gained a worldwide following with a multitude of international adaptations.