Exhibition (may share "superclass" with Collection) - has a host of annotations along with some core info. Associated to objects. Exhibit has temporal quality (when it was on display). Will have Location association (with temporality) for a traveling exhibit. Object association may have temporal quality, or Exhibition association may be to a qualified Exhibition/Location/time-period instance. Some objects may only be in an exhibit for a while, because of damage/theft/other concerns.
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