For the genus/species arabidopsis thaliana, what are the lengths?
CREATE TABLE table_15417439_1 (
    length VARCHAR,
    genus_species VARCHAR
)
SELECT length FROM table_15417439_1 WHERE genus_species = "Arabidopsis thaliana"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: For the genus/species arabidopsis thaliana, what are the lengths? ### Input: CREATE TABLE table_15417439_1 (
    length VARCHAR,
    genus_species VARCHAR
) ### Response: SELECT length FROM table_15417439_1 WHERE genus_species = "Arabidopsis thaliana"