Table: royal_canadian_mint_coins_9
Columns: year
theme
artist
mintage
issue_price

Question: What is the issue price of a Year 2000 coin by artist John Mardon of the Included in Steam Buggy mintage.
SQL: SELECT "issue_price" FROM royal_canadian_mint_coins_9 WHERE "artist" = 'john mardon' AND "year" = 2000 AND "mintage" = 'included in steam buggy'

Question: What is the theme of the Year 2002 which was created by Artist Dan Fell?
SQL: SELECT "theme" FROM royal_canadian_mint_coins_9 WHERE "year" = 2002 AND "artist" = 'dan fell'

Question: What artist had a mintage of 41,828 before year 2002?
SQL: SELECT "artist" FROM royal_canadian_mint_coins_9 WHERE "year" < 2002 AND "mintage" = '41,828'

Question: A mintage of 31,997 has what issue price?
SQL: SELECT "issue_price" FROM royal_canadian_mint_coins_9 WHERE "mintage" = '31,997'