CREATE TABLE table_1956 ("Player" TEXT, "Country" TEXT, "Year ( s )  won" TEXT, "R1" FLOAT, "R2" FLOAT, "R3" FLOAT, "R4" FLOAT, "Total" FLOAT, "To par" TEXT, "Finish" TEXT)

What country had a r3 at 72, by Larry Mize?
SELECT "Country" FROM table_1956 WHERE "R3" = '72' AND "Player" = 'Larry Mize'
SELECT "Country" FROM "table_1956" WHERE "Player" = 'Larry Mize' AND "R3" = '72'