What is the average First year that has a Notes of replaced by us 12 when i-94 replaced us 12, and a Final year larger than 1961?
CREATE TABLE table_8474 (
    "South or west terminus" text,
    "North or east terminus" text,
    "First year" real,
    "Final year" real,
    "Notes" text
)
SELECT AVG("First year") FROM table_8474 WHERE "Notes" = 'replaced by us 12 when i-94 replaced us 12' AND "Final year" > '1961'
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: What is the average First year that has a Notes of replaced by us 12 when i-94 replaced us 12, and a Final year larger than 1961? ### Input: CREATE TABLE table_8474 (
    "South or west terminus" text,
    "North or east terminus" text,
    "First year" real,
    "Final year" real,
    "Notes" text
) ### Response: SELECT AVG("First year") FROM table_8474 WHERE "Notes" = 'replaced by us 12 when i-94 replaced us 12' AND "Final year" > '1961'