Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_27755603_7 ( high_rebounds VARCHAR, date VARCHAR )

### Question ###
For how many games on December 19 is there information on who scored the most rebounds?

### Accurate SQL ###

SELECT COUNT(high_rebounds) FROM table_27755603_7 WHERE date = "December 19"