CREATE TABLE table_74931 ("Year" FLOAT, "Dates" TEXT, "Champion" TEXT, "Country" TEXT, "Score" TEXT, "To par" TEXT, "Margin of victory" TEXT, "Purse  (  US$  ) " FLOAT, "Winner's share" FLOAT)

Which Country has a Score of 70-68-70-68=276?
SELECT "Country" FROM table_74931 WHERE "Score" = '70-68-70-68=276'
SELECT "Country" FROM "table_74931" WHERE "Score" = '70-68-70-68=276'