CREATE TABLE table_39406 ("Round" FLOAT, "Pick #" FLOAT, "Overall" FLOAT, "Name" TEXT, "Position" TEXT, "College" TEXT)

Which Position has an Overall larger than 147, and a Pick # of 21?
SELECT "Position" FROM table_39406 WHERE "Overall" > '147' AND "Pick #" = '21'
SELECT "Position" FROM "table_39406" WHERE "Overall" > '147' AND "Pick #" = '21'