+----+-------------+-----------+------------+
| id | neighbor_id | name      | population |
+====+=============+===========+============+
|  1 | 'Ireland'   | 'Britain' | '67'       |
+----+-------------+-----------+------------+
|  2 | '3'         | 'France'  | 'n/a'      |
+----+-------------+-----------+------------+
|  3 | '22'        | 'Germany' | '83'       |
+----+-------------+-----------+------------+
|  4 | None        | 'Italy'   | '60'       |
+----+-------------+-----------+------------+
|  5 | None        | None      | None       |
+----+-------------+-----------+------------+