CREATE TABLE table_70766 ("Name" TEXT, "Country" TEXT, "Type" TEXT, "Moving from" TEXT, "Transfer window" TEXT, "Ends" FLOAT, "Transfer fee" TEXT, "Source" TEXT)

What is moving from esp with transfer fee of youth system?
SELECT "Moving from" FROM table_70766 WHERE "Country" = 'esp' AND "Transfer fee" = 'youth system'
SELECT "Moving from" FROM "table_70766" WHERE "Country" = 'esp' AND "Transfer fee" = 'youth system'