อันดับของไอซ์แลนด์คืออะไรไม่จำเป็นต้องใช้ตารางทั้งหมด
what's the rank for icelandIt is not neccessary to use all the tables.
 table_72568:  "Rank" [ real]  "Country" [ text]  "Overall" [ text]  "Justice" [ text]  "Health" [ text]  "Education" [ text]  "Economics" [ text]  "Politics" [ text] 
SELECT "Rank" FROM table_72568 WHERE "Country" = 'Iceland'