user: Question: Which opponent's march was 31?
Columns: ['Game', 'March', 'Opponent', 'Score', 'Decision', 'Record']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [66.0, 2.0, 'Philadelphia Flyers', '5 - 4 SO', 'Valiquette', '34-24-8']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "March" = 31.0;