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_203_439 ( id number, "pos." number, "rider" text, "semi-final points" number, "final points" number, "final heats" text, "total points" number )

### Question ###
what is hisor her total semifinal points to qualify for the 12th position ?

### Accurate SQL ###

SELECT "semi-final points" FROM table_203_439 WHERE "pos." = 12