CREATE TABLE table_59901 ("Place" TEXT, "Player" TEXT, "Country" TEXT, "Score" TEXT, "To par" TEXT)

What country has the t7 place, and player Peter Oosterhuis?
SELECT "Country" FROM table_59901 WHERE "Place" = 't7' AND "Player" = 'peter oosterhuis'
SELECT "Country" FROM "table_59901" WHERE "Place" = 't7' AND "Player" = 'peter oosterhuis'