CREATE TABLE table_35475 ("Year" FLOAT, "Date" TEXT, "Venue" TEXT, "Champion" TEXT, "Country" TEXT, "Score" FLOAT, "To par" TEXT, "Margin of victory" TEXT, "Purse  (  $  ) " FLOAT, "Winner's share  ( $ ) " FLOAT)

At what venue is the margin of victory 7 strokes?
SELECT "Venue" FROM table_35475 WHERE "Margin of victory" = '7 strokes'
SELECT "Venue" FROM "table_35475" WHERE "Margin of victory" = '7 strokes'