question: What is the lowest number of last cfs of the team with 2 cf appearances, 0 cup wins, and less than 0 cf wins?
answer: SELECT MIN(last_cf) FROM table_name_90 WHERE cf_appearances = 2 AND cup_wins = 0 AND cf_wins < 0
context: CREATE TABLE table_name_90 (last_cf INTEGER, cf_wins VARCHAR, cf_appearances VARCHAR, cup_wins VARCHAR)