Foo Machines Schema http://www.foobar.com/ns/machines/2/ fm YearOfManufacture Date external year of manufacture MachineName Text external full product name MachineNumber ArticleNumber external product number ArticleNumber http://www.foobar.com/ns/articlenumber/1/ artnum article number series Text machine series model Text machine model 1984 Heavy-duty bread slicer M17 SLK 123TDI