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_6 (canadian_championship VARCHAR, concacaf_champions_league VARCHAR)

### Question ###
What Canadian Championship had CONCACAF Champions League of semifinals?

### Accurate SQL ###

SELECT canadian_championship FROM table_name_6 WHERE concacaf_champions_league = "semifinals"