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_43 (year INTEGER, location VARCHAR, champion VARCHAR)
### Question:
When is the earliest year in milan that guillermo vilas was champion?
### Answer:
SELECT MIN(year) FROM table_name_43 WHERE location = "milan" AND champion = "guillermo vilas"