theorem BFO.SpatiotemporalRegion.Is.toParent
theorem BFO.SpatiotemporalRegion.Is.toParent: ∀ (x : Type) [Is x], Occurrent.Is x
theorem BFO.SpatiotemporalRegion.Is.toParent
theorem BFO.SpatiotemporalRegion.Is.toParent: ∀ (x : Type) [Is x], Occurrent.Is x