what is the number of communities established after 1900 ?
CREATE TABLE table_204_251 (
    id number,
    "community" text,
    "area" text,
    "location" text,
    "population" number,
    "date established" text
)
SELECT COUNT("community") FROM table_204_251 WHERE "date established" > 1900
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 number of communities established after 1900 ? ### Input: CREATE TABLE table_204_251 (
    id number,
    "community" text,
    "area" text,
    "location" text,
    "population" number,
    "date established" text
) ### Response: SELECT COUNT("community") FROM table_204_251 WHERE "date established" > 1900