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_18143210_2 (number_of_seasons_in_top_division INTEGER, first_season_in_top_division VARCHAR)
### Question:
How many 'number of seasons in top division' were played if the 'first season in top division' games is in 1990-91?
### Answer:
SELECT MAX(number_of_seasons_in_top_division) FROM table_18143210_2 WHERE first_season_in_top_division = "1990-91"