what project was initially started before september 20, 1968
CREATE TABLE table_291768_1 (commissioned VARCHAR, launched VARCHAR)
SELECT commissioned FROM table_291768_1 WHERE launched = "September 20, 1968"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_291768_1 (commissioned VARCHAR, launched VARCHAR) Question: what project was initially started before september 20, 1968 [/INST] SELECT commissioned FROM table_291768_1 WHERE launched = "September 20, 1968" </s>