Northern Irish county (6)
(Other definitions for antrim that I've seen before include "County in Ireland's north-east" , "Part of Ireland" , "Giant's Causeway county" , "County of Northern Ireland" , "town in Ireland" .)
(Other definitions for tyrone that I've seen before include "Traditional county of Northern Ireland" , "Omagh its chief town" , "Irish county" , "County of N. Ireland" , "An Ulster county" .)