user: Question: What was the round when nueza silva played against Greece?
Columns: ['Edition', 'Round', 'Date', 'Partnering', 'Against', 'Surface', 'Opponents', 'Result']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['2002 Fed Cup Europe/Africa Group I', 'RR', '26 April 2002', 'Angela Cardoso', 'Georgia', 'Clay', 'Margalita Chakhnashvili Salome Devidze', '4–6, 3–6']
SQL:

assistant: SELECT "Round" FROM "Table" WHERE "Against" = 'Greece';