What is the Population n1891 of the County with Sleaford Headquarters?
CREATE TABLE table_name_44 (
    population_1891 INTEGER,
    headquarters VARCHAR
)
SELECT MAX(population_1891) FROM table_name_44 WHERE headquarters = "sleaford"
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 Population n1891 of the County with Sleaford Headquarters? ### Input: CREATE TABLE table_name_44 (
    population_1891 INTEGER,
    headquarters VARCHAR
) ### Response: SELECT MAX(population_1891) FROM table_name_44 WHERE headquarters = "sleaford"