What is the length of the coaster with the unknown speed
CREATE TABLE table_2665085_1 (length__ft_ VARCHAR, speed__mph_ VARCHAR)
SELECT length__ft_ FROM table_2665085_1 WHERE speed__mph_ = "unknown"
### Context: CREATE TABLE table_2665085_1 (length__ft_ VARCHAR, speed__mph_ VARCHAR) ### Question: What is the length of the coaster with the unknown speed ### Answer: SELECT length__ft_ FROM table_2665085_1 WHERE speed__mph_ = "unknown"