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_name_4 (launches INTEGER, rocket VARCHAR, failures VARCHAR)
### Question:
What is the sum of launches with Long March 3 and 0 failures?
### Answer:
SELECT SUM(launches) FROM table_name_4 WHERE rocket = "long march 3" AND failures > 0