Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_19333752_1 (national_cup VARCHAR, championship VARCHAR)
### Question:
What is the national cup statistics when the Championship is 21 app / 6 goals?
### Answer:
SELECT national_cup FROM table_19333752_1 WHERE championship = "21 app / 6 goals"