CREATE TABLE table_29577 ("Year" FLOAT, "Player" CLOB, "Country" CLOB, "Score" CLOB, "To par" CLOB, "Margin of victory" CLOB, "Course" CLOB, "Location" CLOB, "Purse  (  $  ) " FLOAT, "Winners share  ( $ ) " FLOAT)

What was the margin of victory for the event in lake forest, illinois?
SELECT "Margin of victory" FROM table_29577 WHERE "Location" = 'Lake Forest, Illinois'
SELECT "Margin of victory" FROM "table_29577" WHERE "Location" = 'Lake Forest, Illinois'