To classify an object as, for example, Dewey class number 514 (Topology) (i.e. books having the number 514 on their spine) the implied statement is: "<book><subject heading><514>.
將物件分類為例如杜威分類號514（拓撲）（即書背上有編號為514的書），隱含的陳述是：<book><subject heading><514>。