user: Question: What is the average Prize fund ( US$ ), when OWGR pts is greater than 20, and when Dates is Nov 6-9?
Columns: ['Dates', 'Tournament', 'Country', 'Prize fund ( US$ )', 'Winner', 'OWGR pts']
Types: ['text', 'text', 'text', 'real', 'text', 'real']
Sample row: ['Feb 7-10', 'Emaar-MGF Indian Masters', 'India', 2500000.0, 'Shiv Chowrasia (1)', 26.0]
SQL:

assistant: SELECT AVG("Prize fund ( US$ )") FROM "Table" WHERE "OWGR pts" > 20.0 AND "Dates" = 'Nov 6-9';