user: Question: who is the opponent when played in Trieste before 2007?
Columns: ['Year', 'Competition', 'Town', 'Opponent', 'Final score']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2006.0, 'Friendly', 'Trieste', 'Italy', '11:10']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Year" < 2007.0 AND "Town" = 'Trieste';