user: Question: What was the Mixed doubles that has a Women's players of Maria Gomes Zamy Gomes, and men's players of Fernando Silva Ricardo Fernandes?
Columns: ['Year', "Men's singles", "Women's singles", "Men's doubles", "Women's doubles", 'Mixed doubles']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1956.0, 'Jose da Silva', 'Lezita Chaves', 'Jose da Silva Anibal Rebelo', 'no competition', 'Jose da Silva Guida de Freitas']
SQL:

assistant: SELECT "Mixed doubles" FROM "Table" WHERE "Women's doubles" = 'Maria Gomes Zamy Gomes' AND "Men's doubles" = 'Fernando Silva Ricardo Fernandes';