How long was the instrumental version in 1986?
CREATE TABLE table_34910 (
    "Version" text,
    "Length" text,
    "Album" text,
    "Remixed by" text,
    "Year" real
)
SELECT "Length" FROM table_34910 WHERE "Year" = '1986' AND "Version" = 'instrumental'
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: How long was the instrumental version in 1986? ### Input: CREATE TABLE table_34910 (
    "Version" text,
    "Length" text,
    "Album" text,
    "Remixed by" text,
    "Year" real
) ### Response: SELECT "Length" FROM table_34910 WHERE "Year" = '1986' AND "Version" = 'instrumental'