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_291768_1 (commissioned VARCHAR, launched VARCHAR)
### Question:
what project was initially started before september 20, 1968
### Answer:
SELECT commissioned FROM table_291768_1 WHERE launched = "September 20, 1968"