17.7. Physical Object
Figure 17-7 shows the data model for physical_object . The data model follows the same pattern as that for state and individual .
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Figure 17-7
A state_of_physical_object is a state that is a physical_object or a temporal_part_of a physical_object , where a physical_object is an individual that is distribution of matter, or energy, or both. A physical_object may be a member_of one or more kind_of_physical_object , and one or more class_of_physical_object . A state_of_physical_object may be a member_of one or more class_of_state_of_physical_object .
17.7.1. Class_of_physical_object ...

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