user: Question: What is the format of code 9 40231-2 (US only)?
Columns: ['Title', 'Release date', 'Format', 'Code', 'UK Singles Chart', 'US Modern Rock', 'Album']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Mad Love EP', '26 February 1990', '12"/CD/C', 'BAD 0003', '55', '–', '–']
SQL:

assistant: SELECT "Format" FROM "Table" WHERE "Code" = '9 40231-2 (US only)';