user: Question: What theme is associated with a year before 2006 and Issue Price of $25.22?
Columns: ['Year', 'Theme', 'Artist', 'Mintage', 'Issue Price']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2002.0, 'Centre Ice Coin', 'R.R. Carmichael', '25,000', 'N/A']
SQL:

assistant: SELECT "Theme" FROM "Table" WHERE "Year" < 2006.0 AND "Issue Price" = '$25.22';