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_1692 ( "Province" text, "Provincial capital" text, "Largest city" text, "Area (km 2 )" real, "Population (2013)" real )

### Question ###
what is the number of provincial captial where the province is northern cape?

### Accurate SQL ###

SELECT COUNT("Provincial capital") FROM table_1692 WHERE "Province" = 'Northern Cape'