Who was the vacator when the successor was formally installed on February 1, 1871?
CREATE TABLE table_2417345_3 (
    vacator VARCHAR,
    date_of_successors_formal_installation VARCHAR
)
SELECT vacator FROM table_2417345_3 WHERE date_of_successors_formal_installation = "February 1, 1871"
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 vacator when the successor was formally installed on February 1, 1871? ### Input: CREATE TABLE table_2417345_3 (
    vacator VARCHAR,
    date_of_successors_formal_installation VARCHAR
) ### Response: SELECT vacator FROM table_2417345_3 WHERE date_of_successors_formal_installation = "February 1, 1871"