Name the guest 2 for colin murray 6 april
CREATE TABLE table_20466963_13 (
    guest_2 VARCHAR,
    presenter VARCHAR,
    date VARCHAR
)
SELECT COUNT(guest_2) FROM table_20466963_13 WHERE presenter = "Colin Murray" AND date = "6 April"
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: Name the guest 2 for colin murray 6 april ### Input: CREATE TABLE table_20466963_13 (
    guest_2 VARCHAR,
    presenter VARCHAR,
    date VARCHAR
) ### Response: SELECT COUNT(guest_2) FROM table_20466963_13 WHERE presenter = "Colin Murray" AND date = "6 April"