what is the number of russian participants ?
CREATE TABLE table_204_664 (
    id number,
    "rank" number,
    "bib" number,
    "name" text,
    "nationality" text,
    "start" text,
    "penalties (p+p+s+s)" text,
    "time" text,
    "deficit" text
)
SELECT COUNT(*) FROM table_204_664 WHERE "nationality" = 'russia'
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 russian participants ? ### Input: CREATE TABLE table_204_664 (
    id number,
    "rank" number,
    "bib" number,
    "name" text,
    "nationality" text,
    "start" text,
    "penalties (p+p+s+s)" text,
    "time" text,
    "deficit" text
) ### Response: SELECT COUNT(*) FROM table_204_664 WHERE "nationality" = 'russia'