user: Question: What class has NSR250 as the machine, with points greater than 97?
Columns: ['Year', 'Class', 'Team', 'Machine', 'Points', 'Rank', 'Wins']
Types: ['real', 'text', 'text', 'text', 'real', 'text', 'real']
Sample row: [1985.0, '250cc', 'Rothmans- Honda France', 'RS250', 7.0, '21st', 0.0]
SQL:

assistant: SELECT "Class" FROM "Table" WHERE "Machine" = 'NSR250' AND "Points" > 97.0;