[graph1_on_address
     [any address (^$(no inheritance)$^),
          may have for street_name: a string,
          may have for street_No: a street_No,
          may have for housing_name: a string,
          may have for building_name: a string,
          may have for floor_No: a floor_No,
          may have for unit_No: a unit_No,
          may have for GPO/PMB_Box_No: a GPO/PMB_Box_No,
          may have for additional_address_details: a string,
          may have for district: a district,
          may have for region: a region,
          may have for region_PO_Box_No: a region_PO_Box_No,
          may have for country: a country (^$(explore)$^)]
];