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"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_2665085_1 (length__ft_ VARCHAR, speed__mph_ VARCHAR) Question: What is the length of the coaster with the unknown speed [/INST] SELECT length__ft_ FROM table_2665085_1 WHERE speed__mph_ = "unknown" </s>