What Canadian Championship had CONCACAF Champions League of semifinals?
CREATE TABLE table_name_6 (
    canadian_championship VARCHAR,
    concacaf_champions_league VARCHAR
)
SELECT canadian_championship FROM table_name_6 WHERE concacaf_champions_league = "semifinals"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What Canadian Championship had CONCACAF Champions League of semifinals? ### Input: CREATE TABLE table_name_6 (
    canadian_championship VARCHAR,
    concacaf_champions_league VARCHAR
) ### Response: SELECT canadian_championship FROM table_name_6 WHERE concacaf_champions_league = "semifinals"