Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: 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?

### Accurate SQL ###

SELECT opposition FROM table_name_51 WHERE year < 1911 AND venue = "old trafford"