user: Question: how many people commentated where broadcaster is ORF
Columns: ['Voting order', 'Country', 'Spokespersons', 'Commentator', 'Broadcaster']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Luxembourg', 'TBC', 'Jacques Navadic', 'Télé-Luxembourg']
SQL:

assistant: SELECT COUNT("Commentator") FROM "Table" WHERE "Broadcaster" = 'ORF';