CREATE TABLE table_name_75 (winning_score VARCHAR2, championship VARCHAR2, margin VARCHAR2)

What was the winning score in the u.s. women's open that was won by 5 strokes?
SELECT winning_score FROM table_name_75 WHERE championship = "u.s. women's open" AND margin = "5 strokes"
SELECT "winning_score" FROM "table_name_75" WHERE "5 strokes" = "margin" AND "championship" = "u.s. women's open"