user: Question: What was the player's team's opponent for Week 12?
Columns: ['Week', 'Player', 'Team', 'Opponent', 'Carries', 'Yards', 'Average', 'Touchdowns']
Types: ['real', 'text', 'text', 'text', 'real', 'real', 'text', 'real']
Sample row: [1.0, 'Clinton Portis', 'DEN', 'CIN', 24.0, 120.0, '5.0', 2.0]
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Week" = 12.0;