user: Question: What kind of Free or pay has Years of 2006– and a Provider of BT TV (formerly BT Vision)?
Columns: ['Provider', 'Years', 'Free or pay', 'Transmission', 'On demand']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['BT TV (formerly BT Vision)', '2006–', 'Pay', 'IPTV and digital terrestrial', 'Yes']
SQL:

assistant: SELECT "Free or pay" FROM "Table" WHERE "Years" = '2006–' AND "Provider" = 'BT TV (formerly BT Vision)';