| http://www.w3.org/ns/prov#value | - see attached test case: entities Library, Book, and Page. there is a one-many bidirectional relationship between Library and Book, and Book and Page. a Library's ID is simply it is name. a Book's ID is it is name, plus it is owning library's ID. A Page's ID is it is number, plus it is owning Book's ID. this arrangement results in composite IDs for Book and Page. and moreover, Page's composite ID, PageI
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