CREATE TABLE table_12560 ("Player" TEXT, "Pos." TEXT, "Nationality" TEXT, "Previous team" TEXT, "Years of NBA experience [a ]" TEXT)

What is the Nationality of the G Player with 4 years NBA Experience?
SELECT "Nationality" FROM table_12560 WHERE "Years of NBA experience [a ]" = '4' AND "Pos." = 'g'
SELECT "Nationality" FROM "table_12560" WHERE "Pos." = 'g' AND "Years of NBA experience [a ]" = '4'