user: Question: What number corresponds to Presidet Yves Krattinger of the Socialist Party?
Columns: ['Number', 'Départment (or collectivity)', 'Président', 'Party', 'Since']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['01', 'Ain', 'Rachel Mazuir', 'Socialist Party', 2008.0]
SQL:

assistant: SELECT "Number" FROM "Table" WHERE "Party" = 'Socialist Party' AND "Président" = 'Yves Krattinger';