what country lost the most ships to u-502 ?
CREATE TABLE table_203_268 (
    id number,
    "date" text,
    "name" text,
    "nationality" text,
    "tonnage\n(grt)" number,
    "fate" text
)
SELECT "nationality" FROM table_203_268 GROUP BY "nationality" ORDER BY COUNT("name") DESC LIMIT 1
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: what country lost the most ships to u-502 ? ### Input: CREATE TABLE table_203_268 (
    id number,
    "date" text,
    "name" text,
    "nationality" text,
    "tonnage\n(grt)" number,
    "fate" text
) ### Response: SELECT "nationality" FROM table_203_268 GROUP BY "nationality" ORDER BY COUNT("name") DESC LIMIT 1