When did the club UNAM played the first season in top division?
CREATE TABLE table_18143210_2 (first_season_in_top_division VARCHAR, club VARCHAR)
SELECT first_season_in_top_division FROM table_18143210_2 WHERE club = "UNAM"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_18143210_2 (first_season_in_top_division VARCHAR, club VARCHAR) Question: When did the club UNAM played the first season in top division? [/INST] SELECT first_season_in_top_division FROM table_18143210_2 WHERE club = "UNAM" </s>