for the rank of 3 for the united states, what is the average lane?
CREATE TABLE table_69149 (
    "Rank" real,
    "Lane" real,
    "Name" text,
    "Nationality" text,
    "Time" real
)
SELECT AVG("Lane") FROM table_69149 WHERE "Nationality" = 'united states' AND "Rank" = '3'
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 rank of 3 for the united states, what is the average lane? ### Input: CREATE TABLE table_69149 (
    "Rank" real,
    "Lane" real,
    "Name" text,
    "Nationality" text,
    "Time" real
) ### Response: SELECT AVG("Lane") FROM table_69149 WHERE "Nationality" = 'united states' AND "Rank" = '3'