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_81 (joined INTEGER, city VARCHAR, conference_championships VARCHAR)
### Question:
What is the lowest year joined in the city of College Park at the Conference championships smaller than 0?
### Answer:
SELECT MIN(joined) FROM table_name_81 WHERE city = "college park" AND conference_championships < 0