What is the primary conference that was founded before 1866 and has an affiliation of private/catholic?
CREATE TABLE table_name_58 (
    primary_conference VARCHAR,
    founded VARCHAR,
    affiliation VARCHAR
)
SELECT primary_conference FROM table_name_58 WHERE founded < 1866 AND affiliation = "private/catholic"
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 primary conference that was founded before 1866 and has an affiliation of private/catholic? ### Input: CREATE TABLE table_name_58 (
    primary_conference VARCHAR,
    founded VARCHAR,
    affiliation VARCHAR
) ### Response: SELECT primary_conference FROM table_name_58 WHERE founded < 1866 AND affiliation = "private/catholic"