Question: What was the transfer fee when Winter was the transfer window?
SQL: SELECT "Transfer fee" FROM "2-17480138-2" WHERE "Transfer window" = 'Winter';

Question: What transfer fee has both Winter as the transfer window, and Madureira as the moving to?
SQL: SELECT "Transfer fee" FROM "2-17480138-2" WHERE "Transfer window" = 'Winter' AND "Moving to" = 'Madureira';

Question: What was the moving that has a Free transfer fee, and the nationality of CYP, and Winter as the transfer window?
SQL: SELECT "Moving to" FROM "2-17480138-2" WHERE "Transfer fee" = 'Free' AND "Nat." = 'CYP' AND "Transfer window" = 'Winter';

Question: Who is moving to Metalurh Donetsk?
SQL: SELECT "Name" FROM "2-17480138-2" WHERE "Moving to" = 'Metalurh Donetsk';

Question: The player moving to Villa Rio has what transfer fee?
SQL: SELECT "Transfer fee" FROM "2-17480138-2" WHERE "Moving to" = 'Villa Rio';

Question: Emerson has what transfer window?
SQL: SELECT "Transfer window" FROM "2-17480138-2" WHERE "Name" = 'Emerson';