sentences:  The burger is one of the best known products in the fast food industry; it is so well known that Burger King bills itself as "the Home of the Whopper" in its advertising and signage.Additionally, the company uses the name in its high-end concept, the BK Whopper Bar.Due to its place in the marketplace, the Whopper has prompted Burger King's competitors, mainly McDonald's with at least six different products and Wendy's with its Big Classic, to try to develop similar products designed to compete with it.