Which Opposition has a Year smaller than 1911, and a Venue of old trafford?
CREATE TABLE table_name_51 (
    opposition VARCHAR,
    year VARCHAR,
    venue VARCHAR
)
SELECT opposition FROM table_name_51 WHERE year < 1911 AND venue = "old trafford"
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: Which Opposition has a Year smaller than 1911, and a Venue of old trafford? ### Input: CREATE TABLE table_name_51 (
    opposition VARCHAR,
    year VARCHAR,
    venue VARCHAR
) ### Response: SELECT opposition FROM table_name_51 WHERE year < 1911 AND venue = "old trafford"