user: Question: What was the visiting team that played a Round 16 game?
Columns: ['Attendance', 'Round', 'Date', 'Home', 'Score', 'Away', 'Venue', 'Weekday', 'Time of Day']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [14403.0, 'Final', '21 December 2008', 'Chalatenango', '3 – 3', 'Metapán', 'Estadio Cuscatlán', 'Sunday', 'Afternoon']
SQL:

assistant: SELECT "Away" FROM "Table" WHERE "Round" = 'Round 16';