Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_36 (date VARCHAR, margin_of_victory VARCHAR, tournament VARCHAR)
### Question:
What date was there a playoff on the margin of victory during the Shirley Englehorn Invitational?
### Answer:
SELECT date FROM table_name_36 WHERE margin_of_victory = "playoff" AND tournament = "shirley englehorn invitational"