theorem BFO.instCoeDepTypeThreeDimensionalSpatialRegionOfIs._proof_1
theorem BFO.instCoeDepTypeThreeDimensionalSpatialRegionOfIs._proof_1: ∀ (x : Type) [j12bzjgj.BFO.ThreeDimensionalSpatialRegion.Is x], j12bzjgj.BFO.ThreeDimensionalSpatialRegion.Is x