user: Question: What kind of D.C. has Races smaller than 20, and Points larger than 0, and Drivers of Christian Vietoris, and Wins of 1?
Columns: ['Year', 'Drivers', 'Races', 'Wins', 'Poles', 'F.L.', 'Points', 'D.C.', 'T.C.']
Types: ['real', 'text', 'real', 'real', 'real', 'real', 'real', 'text', 'text']
Sample row: [2005.0, 'Neel Jani', 23.0, 2.0, 1.0, 0.0, 48.0, '7th', '5th']
SQL:

assistant: SELECT "D.C." FROM "Table" WHERE "Races" < 20.0 AND "Points" > 0.0 AND "Drivers" = 'Christian Vietoris' AND "Wins" = 1.0;