how many freeways in las vegas are closed ?
O O B-SL_LOCATION_IN_GET_LOCATION_SL_CATEGORY_LOCATION I-SL_LOCATION_IN_GET_LOCATION B-SL_LOCATION_IN_GET_LOCATION_SL_LOCATION_MODIFIER I-SL_LOCATION_IN_GET_LOCATION_SL_LOCATION_MODIFIER O O O