What is the sum of 1891(s), when 1872 is less than 685, and when 1881 is less than 348?
CREATE TABLE table_42564 (
    "1861" real,
    "1866" real,
    "1872" real,
    "1876" real,
    "1881" real,
    "1886" real,
    "1891" real
)
SELECT SUM("1891") FROM table_42564 WHERE "1872" < '685' AND "1881" < '348'
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 sum of 1891(s), when 1872 is less than 685, and when 1881 is less than 348? ### Input: CREATE TABLE table_42564 (
    "1861" real,
    "1866" real,
    "1872" real,
    "1876" real,
    "1881" real,
    "1886" real,
    "1891" real
) ### Response: SELECT SUM("1891") FROM table_42564 WHERE "1872" < '685' AND "1881" < '348'