Table schema:
CREATE TABLE table_name_33 (date VARCHAR, margin_of_victory VARCHAR, winning_score VARCHAR)

Question: Which Date has a Margin of victory of 5 strokes, and a Winning score of −13 (67-73-64-63=267)?
SQL: SELECT date FROM table_name_33 WHERE margin_of_victory = "5 strokes" AND winning_score = −13(67 - 73 - 64 - 63 = 267)