user: Question: What is the class of the co-driver Emanuele Pirro JJ Lehto?
Columns: ['Year', 'Team', 'Co-Drivers', 'Class', 'Pos.', 'Class Pos.']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1983.0, 'Sorga S.A. / Joest Racing', 'Klaus Ludwig Bob Wollek', 'C', '6th', '6th']
SQL:

assistant: SELECT "Class" FROM "Table" WHERE "Co-Drivers" = 'Emanuele Pirro JJ Lehto';