How many episodes have the title 'the world of who'?
CREATE TABLE table_20885 (
    "Episode #" text,
    "Original airdate (UK)" text,
    "Episode title" text,
    "Doctor Who episode" text,
    "Webcast link" text
)
SELECT COUNT("Episode #") FROM table_20885 WHERE "Episode title" = 'The World of Who'
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 episodes have the title 'the world of who'? ### Input: CREATE TABLE table_20885 (
    "Episode #" text,
    "Original airdate (UK)" text,
    "Episode title" text,
    "Doctor Who episode" text,
    "Webcast link" text
) ### Response: SELECT COUNT("Episode #") FROM table_20885 WHERE "Episode title" = 'The World of Who'