user: Question: What is the average amount of points when the time (s) is 81.78?
Columns: ['Rider', 'Horse', 'Time ( s )', 'Faults', 'Total time ( s )', 'Points']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['Beezie Madden', 'Authentic', '77.62', '0', '77.62', 0.0]
SQL:

assistant: SELECT AVG("Points") FROM "Table" WHERE "Time ( s )" = '81.78';