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_name_31 (winner VARCHAR, semi_finalists VARCHAR)

### Question ###
What is the Winner when anke huber chanda rubin was semi finalist?

### Accurate SQL ###

SELECT winner FROM table_name_31 WHERE semi_finalists = "anke huber chanda rubin"