Nodes for Books appear (in Full Screen view) as different labeled and color-coded circles according to Category where Book_D (denim or blue) includes Cat_Class 500 and 600, Book_G (green) includes Cat_Class 400, 700, 800, and 900, then Book_R includes Cat_Class 100, 200, and 300; there are five (5) of each Book label type. Nodes for Reviews appear as lighter shaded gold or yellow circles. Relationships are the same as in Figure 10.

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