What is the smallest number of silvers associated with bronzes under 20, totals of 1, golds of 0, and in Water Polo?
CREATE TABLE table_43929 (
    "Sport" text,
    "Gold" real,
    "Silver" real,
    "Bronze" real,
    "Total" real
)
SELECT MIN("Silver") FROM table_43929 WHERE "Bronze" < '20' AND "Total" = '1' AND "Sport" = 'water polo' AND "Gold" < '0'
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 smallest number of silvers associated with bronzes under 20, totals of 1, golds of 0, and in Water Polo? ### Input: CREATE TABLE table_43929 (
    "Sport" text,
    "Gold" real,
    "Silver" real,
    "Bronze" real,
    "Total" real
) ### Response: SELECT MIN("Silver") FROM table_43929 WHERE "Bronze" < '20' AND "Total" = '1' AND "Sport" = 'water polo' AND "Gold" < '0'