CREATE TABLE table_name_96 (country VARCHAR2, transfer_fee VARCHAR2, moving_to VARCHAR2)

What country is the player, with an undisclosed transfer fee and moving to Nacional, from?
SELECT country FROM table_name_96 WHERE transfer_fee = "undisclosed" AND moving_to = "nacional"
SELECT "country" FROM "table_name_96" WHERE "moving_to" = "nacional" AND "transfer_fee" = "undisclosed"