CREATE TABLE table_26966 ("Name" TEXT, "Position" TEXT, "Period" TEXT, "Appearances\\u00b9" FLOAT, "Goals\\u00b9" FLOAT, "Nationality\\u00b2" TEXT)

What is the nationality of the player who scored 13 goals
SELECT "Nationality\u00b2" FROM table_26966 WHERE "Goals\u00b9" = '13'
SELECT "Nationality\u00b2" FROM "table_26966" WHERE "Goals\u00b9" = '13'