user: Question: Which location has a method of Decision and Nikos Tsoukalas for an opponent?
Columns: ['Result', 'Record', 'Opponent', 'Method', 'Location']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Win', '11-10', 'Noel Cadet', 'KO (right hook)', 'Bratislava, Slovakia']
SQL:

assistant: SELECT "Location" FROM "Table" WHERE "Method" = 'Decision' AND "Opponent" = 'Nikos Tsoukalas';