Who was the opponent when they played at the legion field birmingham, al site?
CREATE TABLE table_43835 (
    "Date" text,
    "Opponent" text,
    "Site" text,
    "Result" text,
    "Attendance" text
)
SELECT "Opponent" FROM table_43835 WHERE "Site" = 'legion field • birmingham, al'
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: Who was the opponent when they played at the legion field birmingham, al site? ### Input: CREATE TABLE table_43835 (
    "Date" text,
    "Opponent" text,
    "Site" text,
    "Result" text,
    "Attendance" text
) ### Response: SELECT "Opponent" FROM table_43835 WHERE "Site" = 'legion field • birmingham, al'