Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_51 (opposition VARCHAR, year VARCHAR, venue VARCHAR)
### Question:
Which Opposition has a Year smaller than 1911, and a Venue of old trafford?
### Answer:
SELECT opposition FROM table_name_51 WHERE year < 1911 AND venue = "old trafford"