user: Question: What Attack has a 30,00% GERB?
Columns: ['Source', 'Date', 'GERB', 'Attack', 'Blue Coalition']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Alpha Research', 'March', '19,2%', '6,8%', '4,9%']
SQL:

assistant: SELECT "Attack" FROM "Table" WHERE "GERB" = '30,00%';