user: Question: What is the Number of the koppenberg course with less than 195 Kilometers?
Columns: ['Number', 'Name', 'Kilometer', 'Pavement', 'Length (m)', 'Average climb (%)']
Types: ['real', 'text', 'real', 'text', 'real', 'real']
Sample row: [17.0, 'Kluisberg', 99.0, 'asphalt', 1250.0, 53.0]
SQL:

assistant: SELECT "Number" FROM "Table" WHERE "Name" = 'koppenberg' AND "Kilometer" < 195.0;