Table: nhl_cf_stats
Columns: team
cf_appearances
cf_wins
cup_wins
last_cf

Question: What is the average last cf of the st. louis blues, who has less than 4 cf appearances and less than 1 cf wins?
SQL: SELECT AVG("last_cf") FROM nhl_cf_stats WHERE "cf_appearances" < 4 AND "cf_wins" < 1 AND "team" = 'st. louis blues'

Question: What is the lowest number of cf wins of the chicago blackhawks, which has more than 4 cf appearances, a last cf in 2013, and more than 2 cup wins?
SQL: SELECT MIN("cf_wins") FROM nhl_cf_stats WHERE "cf_appearances" > 4 AND "last_cf" = 2013 AND "team" = 'chicago blackhawks' AND "cup_wins" > 2

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?
SQL: SELECT MIN("last_cf") FROM nhl_cf_stats WHERE "cf_appearances" = 2 AND "cup_wins" = 0 AND "cf_wins" < 0