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_55 (date VARCHAR, margin_of_victory VARCHAR, runner_s__up VARCHAR)
### Question:
Which date was the event that Yani won in a playoff over Yueh-Chyn Huang?
### Answer:
SELECT date FROM table_name_55 WHERE margin_of_victory = "playoff" AND runner_s__up = "yueh-chyn huang"