What is the archive of the show that aired on 18april1970?
CREATE TABLE table_2102898_1 (archive VARCHAR, broadcast_date VARCHAR)
SELECT archive FROM table_2102898_1 WHERE broadcast_date = "18April1970"
### Context: CREATE TABLE table_2102898_1 (archive VARCHAR, broadcast_date VARCHAR) ### Question: What is the archive of the show that aired on 18april1970? ### Answer: SELECT archive FROM table_2102898_1 WHERE broadcast_date = "18April1970"