user: Question: What is the general classification of Mapei-CLAS in stage 12?
Columns: ['Stage', 'Winner', 'General classification', 'Points classification', 'Mountains classification', 'Team classification']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['P', 'Tony Rominger', 'Tony Rominger', 'Tony Rominger', 'not awarded', 'Banesto']
SQL:

assistant: SELECT "General classification" FROM "Table" WHERE "Team classification" = 'Mapei-CLAS' AND "Stage" = '12';