user: Question: Who is the opponent of the Submission (triangle choke) method of submission?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Round', 'Time', 'Location']
Types: ['text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Win', '20-7', 'Lumumba Sayers', 'Submission (rear naked choke)', 1.0, '3:39', 'Castle Rock, Colorado']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Method" = 'Submission (triangle choke)';