Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Name the sum of Long for yards less than 197 and players of matt nagy

### Inputs:
table_name: table, columns: ['Player', 'Car.', 'Yards', 'Avg.', "TD's", 'Long']

### Response:
SELECT SUM Long FROM table WHERE Yards < 197 AND Player = matt nagy