ใครจมมากที่สุด ?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
who was sunk the most ?It is not neccessary to use all the tables.
 table_202_117:  id [ number]  "date" [ text]  "ship" [ text]  "nationality" [ text]  "tonnage" [ number]  "fate" [ text] 
SELECT "nationality" FROM table_202_117 WHERE "fate" = 'sunk' GROUP BY "nationality" ORDER BY COUNT(*) DESC LIMIT 1