What theme has a mintage of 3527?
CREATE TABLE table_name_91 (theme VARCHAR, mintage VARCHAR)
SELECT theme FROM table_name_91 WHERE mintage = "3527"
### Context: CREATE TABLE table_name_91 (theme VARCHAR, mintage VARCHAR) ### Question: What theme has a mintage of 3527? ### Answer: SELECT theme FROM table_name_91 WHERE mintage = "3527"