Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_28657 ( "Name / designation" text, "Year of introduction" text, "Country of origin" text, "Primary cartridge" text, "primary user" text )

### Question ###
If the Country of Origin is Denmark and the year of introduction is 1962, what is the primary cartridge?

### Accurate SQL ###

SELECT "Primary cartridge" FROM table_28657 WHERE "Year of introduction" = '1962' AND "Country of origin" = 'Denmark'