how many women from the united states competed in the 1971 world figure skating championships ?
CREATE TABLE table_204_291 (
    id number,
    "rank" number,
    "name" text,
    "nation" text,
    "cp" number,
    "fp" number,
    "points" number,
    "placings" number
)
SELECT COUNT("name") FROM table_204_291 WHERE "nation" = 'united states'
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: how many women from the united states competed in the 1971 world figure skating championships ? ### Input: CREATE TABLE table_204_291 (
    id number,
    "rank" number,
    "name" text,
    "nation" text,
    "cp" number,
    "fp" number,
    "points" number,
    "placings" number
) ### Response: SELECT COUNT("name") FROM table_204_291 WHERE "nation" = 'united states'