user: Question: What is the highest Purse ($) that has a 1st Prize ($) of 45,000 at the GTE Kaanapali Classic tournament?
Columns: ['Date', 'Tournament', 'Location', 'Purse( $ )', 'Winner', 'Score', '1st Prize( $ )']
Types: ['text', 'text', 'text', 'real', 'text', 'text', 'text']
Sample row: ['Jan 8', 'MONY Senior Tournament of Champions', 'California', 250000.0, 'Miller Barber (23)', '280 (-8)', '50,000']
SQL:

assistant: SELECT MAX("Purse( $ )") FROM "Table" WHERE "1st Prize( $ )" = '45,000' AND "Tournament" = 'GTE Kaanapali Classic';