user: ### NOW ANSWER:
Question: Name the sum of Long for yards less than 197 and players of Matt Nagy
Columns: ['Player', 'Car.', 'Yards', 'Avg.', "TD's", 'Long']
Types: ['text', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Harold Wells', 73.0, 197.0, 2.7, 13.0, 13.0]
SQL:

assistant: SELECT SUM("Long") FROM "Table" WHERE "Yards" < 197.0 AND "Player" = 'Matt Nagy';