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_name_78 ( year VARCHAR, day_of_week VARCHAR, rank VARCHAR )

### Question ###
What is the year of the movie with an opening day on Friday with a rank 10?

### Accurate SQL ###

SELECT COUNT(year) FROM table_name_78 WHERE day_of_week = "friday" AND rank = 10