What was the production number of the episode filmed in aug/sept 1968?
CREATE TABLE table_1971734_1 (prod__number VARCHAR, filmed VARCHAR)
SELECT prod__number FROM table_1971734_1 WHERE filmed = "Aug/Sept 1968"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1971734_1 (prod__number VARCHAR, filmed VARCHAR) Question: What was the production number of the episode filmed in aug/sept 1968? [/INST] SELECT prod__number FROM table_1971734_1 WHERE filmed = "Aug/Sept 1968" </s>