user: Question: When herb graver played, how many field goals were made when there were more than 50 points, less than 15 touchdowns, and more than 0 extra points?
Columns: ['Player', 'Touchdowns', 'Extra points', 'Field goals', 'Points']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Tom Hammond', 15.0, 63.0, 5.0, 163.0]
SQL:

assistant: SELECT SUM("Field goals") FROM "Table" WHERE "Points" > 50.0 AND "Extra points" > 0.0 AND "Player" = 'herb graver' AND "Touchdowns" < 15.0;