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			Top of the CONA Hierarchy
			.... Built Works (CONA facet)
			........ <B> (8)
			........ <U> (1)

			............ Built Works by class: fortifications, transportation, bridges, barriers, military, urban planning, and engineering works
			................ Paris Metro
			.................... Chatelet-Les Halles Station
			.................... Cite Station, Paris Metro
			.................... Monceau Station, Paris Metro