user: Question: Which event has a Method of Submission (triangle choke), and an Opponent of Thiago Tavares?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Loss', '23–4–1', 'Matt Grice', 'Decision (split)', 'UFC 77', '3', '5:00']
SQL:

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