What is the lowest Natural Change, when Natural Change (Per 1000) is 19.1, and when Crude Birth Rate (Per 1000) is less than 28.3?
CREATE TABLE table_40967 (
    "Average population (x 1000)" real,
    "Live births" real,
    "Deaths" real,
    "Natural change" real,
    "Crude birth rate (per 1000)" real,
    "Crude death rate (per 1000)" real,
    "Natural change (per 1000)" real
)
SELECT MIN("Natural change") FROM table_40967 WHERE "Natural change (per 1000)" = '19.1' AND "Crude birth rate (per 1000)" < '28.3'
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 lowest Natural Change, when Natural Change (Per 1000) is 19.1, and when Crude Birth Rate (Per 1000) is less than 28.3? ### Input: CREATE TABLE table_40967 (
    "Average population (x 1000)" real,
    "Live births" real,
    "Deaths" real,
    "Natural change" real,
    "Crude birth rate (per 1000)" real,
    "Crude death rate (per 1000)" real,
    "Natural change (per 1000)" real
) ### Response: SELECT MIN("Natural change") FROM table_40967 WHERE "Natural change (per 1000)" = '19.1' AND "Crude birth rate (per 1000)" < '28.3'