Question: what is the date when the format is CD (limited edition steel-box) from United Kingdom?
SQL: SELECT "Date" FROM "2-18424778-6" WHERE "Format" = 'CD (limited edition steel-box)' AND "Country" = 'United Kingdom';

Question: What is the country that has the format of CD, the label of Sony Music and the catalogue no SICP-2055?
SQL: SELECT "Country" FROM "2-18424778-6" WHERE "Format" = 'CD' AND "Label" = 'Sony Music' AND "Catalogue No." = 'SICP-2055';

Question: what is the format for the country United Kingdom on 20 October 2008?
SQL: SELECT "Format" FROM "2-18424778-6" WHERE "Country" = 'United Kingdom' AND "Date" = '20 October 2008';

Question: what is the catalogue no when the format is CD (limited edition steel-box) and the country is Germany?
SQL: SELECT "Catalogue No." FROM "2-18424778-6" WHERE "Format" = 'CD (limited edition steel-box)' AND "Country" = 'Germany';