For how many games on December 19 is there information on who scored the most rebounds?
CREATE TABLE table_27755603_7 (
    high_rebounds VARCHAR,
    date VARCHAR
)
SELECT COUNT(high_rebounds) FROM table_27755603_7 WHERE date = "December 19"
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: For how many games on December 19 is there information on who scored the most rebounds? ### Input: CREATE TABLE table_27755603_7 (
    high_rebounds VARCHAR,
    date VARCHAR
) ### Response: SELECT COUNT(high_rebounds) FROM table_27755603_7 WHERE date = "December 19"