What is the broadcast date of the 16mm t/r episode?
CREATE TABLE table_1849243_1 (broadcast_date VARCHAR, archive VARCHAR)
SELECT broadcast_date FROM table_1849243_1 WHERE archive = "16mm t/r"
### Context: CREATE TABLE table_1849243_1 (broadcast_date VARCHAR, archive VARCHAR) ### Question: What is the broadcast date of the 16mm t/r episode? ### Answer: SELECT broadcast_date FROM table_1849243_1 WHERE archive = "16mm t/r"