user: ### NOW ANSWER:
Question: What is the Standard cost (USD) of KWin team creator?
Columns: ['Name', 'Creator', 'Latest stable version', 'Standard cost (USD)', 'Software license']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['"Overview" mode in GNOME Shell', 'GNOME team', '3.8 (part of GNOME )', 'Free', 'GPL']
SQL:

assistant: SELECT "Standard cost (USD)" FROM "Table" WHERE "Creator" = 'KWin team';