Table: toronto_fc_seasons
Columns: year
regular_season
playoffs
canadian_championship
concacaf_champions_league

Question: What Canadian Championship had CONCACAF Champions League of semifinals?
SQL: SELECT "canadian_championship" FROM toronto_fc_seasons WHERE "concacaf_champions_league" = 'semifinals'

Question: Which regular season had the playoffs of 0 mls cups?
SQL: SELECT "regular_season" FROM toronto_fc_seasons WHERE "playoffs" = '0 mls cups'