user: Question: What was the MNZ FEA when the SIL SPR was 18?
Columns: ['Team', 'Car No.', 'MNZ SPR', 'MNZ FEA', 'SPA SPR', 'SPA FEA', 'MON FEA', 'SIL SPR', 'SIL FEA', 'HUN SPR', 'HUN FEA', 'LMS SPR', 'LMS FEA', 'CAT SPR', 'CAT FEA', 'Points']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Tech 1 Racing', '1', '3', '4', 'Ret', 'Ret', '4', '7', '10', '2', '2', '9', '15', '1', '5', '175']
SQL:

assistant: SELECT "MNZ FEA" FROM "Table" WHERE "SIL SPR" = '18';