user: Question: During the voting order 11, when the commentator was Pierre Tchernia, who was the spokesperson?
Columns: ['Voting order', 'Country', 'Spokespersons', 'Commentator', 'Broadcaster']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Netherlands', 'Dick van Bommel', 'Teddy Scholten', 'Nederland 1']
SQL:

assistant: SELECT "Spokespersons" FROM "Table" WHERE "Commentator" = 'Pierre Tchernia' AND "Voting order" = 11.0;