user: Question: WHAT IS THE VAL-DE-MARNE WITH A Seine-Saint-Denis of 2.7%?
Columns: ['% people under 18 (2005)', 'Seine-Saint-Denis', 'Paris', 'Val-de-Marne', "Val-d'Oise", 'France']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['All origins', '56.7%', '41.30%', '39.90%', '37.90%', '18.10%']
SQL:

assistant: SELECT "Val-de-Marne" FROM "Table" WHERE "Seine-Saint-Denis" = '2.7%';