How many womens singles winners were there when peter rasmussen won the mens singles?
CREATE TABLE table_17385 (
    "Year" real,
    "Mens singles" text,
    "Womens singles" text,
    "Mens doubles" text,
    "Womens doubles" text,
    "Mixed doubles" text
)
SELECT COUNT("Womens singles") FROM table_17385 WHERE "Mens singles" = 'Peter Rasmussen'
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 womens singles winners were there when peter rasmussen won the mens singles? ### Input: CREATE TABLE table_17385 (
    "Year" real,
    "Mens singles" text,
    "Womens singles" text,
    "Mens doubles" text,
    "Womens doubles" text,
    "Mixed doubles" text
) ### Response: SELECT COUNT("Womens singles") FROM table_17385 WHERE "Mens singles" = 'Peter Rasmussen'