Table: canadiens_roster
Columns: round
player
position
nationality
college_junior_club_team

Question: What round has mathieu garon as the player?
SQL: SELECT "round" FROM canadiens_roster WHERE "player" = 'mathieu garon'

Question: What nationality has a position of left wing, and a round greater than 4, with mattia baldi as the player?
SQL: SELECT "nationality" FROM canadiens_roster WHERE "position" = 'left wing' AND "round" > 4 AND "player" = 'mattia baldi'

Question: How many rounds have goalie as the position?
SQL: SELECT SUM("round") FROM canadiens_roster WHERE "position" = 'goalie'