What is the series score of the game with Vancouver as the visiting team on April 16?
CREATE TABLE table_name_73 (
    series VARCHAR,
    visitor VARCHAR,
    date VARCHAR
)
SELECT series FROM table_name_73 WHERE visitor = "vancouver" AND date = "april 16"
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 series score of the game with Vancouver as the visiting team on April 16? ### Input: CREATE TABLE table_name_73 (
    series VARCHAR,
    visitor VARCHAR,
    date VARCHAR
) ### Response: SELECT series FROM table_name_73 WHERE visitor = "vancouver" AND date = "april 16"