user: Question: Name the guest 4 for Steve Lamacq
Columns: ['Date', 'Presenter', 'Guest 1', 'Guest 2', 'Guest 3', 'Guest 4']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['18 August', 'Colin Murray', 'John Rawling', 'Neil Delamere', 'Greg Brady', 'Clarke Carlisle (debut)']
SQL:

assistant: SELECT "Guest 4" FROM "Table" WHERE "Guest 2" = 'Steve Lamacq';