| http://www.w3.org/ns/prov#value | - FIG. 2A illustrates a simple example including three objects A, B, and C, where object A occludes object B, but neither A or B occludes C. FIG. 2B shows the occlusion graph for the example in FIG. 2A. In the example shown in FIG. 3A, object A occludes B, and B occludes C. FIG. 3B shows the occlusion graph for the example scene in FIG. 3A. Note that the occlusion graph is acyclic in both of these e
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