Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_17839_1 (length VARCHAR, map_colour VARCHAR)
### Question:
When turquoise is the map colour what is the length?
### Answer:
SELECT length FROM table_17839_1 WHERE map_colour = "Turquoise"