user: Question: What position had a debut in Round 6?
Columns: ['Name', 'Position', 'From (Club)', 'Date Joined', 'Debut']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Noel Spencer', 'Midfield', 'Sydney FC', '7 May 2007', 'Round 1']
SQL:

assistant: SELECT "Position" FROM "Table" WHERE "Debut" = 'Round 6';