user: Question: Who is the tuner after season 2004 with Gaurav Gill as the driver, Team MRF, and MAI governing body?
Columns: ['Season', 'Driver', 'Co-Driver', 'Team', 'Tuner', 'Governing Body']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [2012.0, 'Amittrajit Ghosh', 'Ashwin Naik', 'RRPM', 'B.Rajan', 'FMSCI']
SQL:

assistant: SELECT "Tuner" FROM "Table" WHERE "Season" > 2004.0 AND "Driver" = 'Gaurav Gill' AND "Team" = 'Team MRF' AND "Governing Body" = 'MAI';