CREATE TABLE table_50449 ("Name" TEXT, "Country" TEXT, "Type" TEXT, "Moving from" TEXT, "Transfer window" TEXT, "Transfer fee" TEXT)

What is the country of the player moving from belgrano with a summer transfer window?
SELECT "Country" FROM table_50449 WHERE "Transfer window" = 'summer' AND "Moving from" = 'belgrano'
SELECT "Country" FROM "table_50449" WHERE "Moving from" = 'belgrano' AND "Transfer window" = 'summer'