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_64927 ( "Event" text, "Date" text, "Location" text, "Winning skip" text, "Runner-up skip" text )

### Question ###
What's the location of the National event with Kevin Martin winning?

### Accurate SQL ###

SELECT "Location" FROM table_64927 WHERE "Winning skip" = 'kevin martin' AND "Event" = 'the national'