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			Top of the CONA Hierarchy
			.... Built Works (CONA facet)
			........ <B> (8)

			............ Unidentified Named Built Works
			................ Ellis Island Buildings
			.................... Baggage and Dormitory Building
			.................... Contagious Disease Hospital
			.................... Ellis Island Immigration Station Main Building
			.................... Office Building
			.................... Superintendent's Residence

........ <U> (1)